Materials Chemically Specified Patents (Class 429/245)
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Patent number: 9688223Abstract: A liquid lead storage battery includes a negative electrode plate, a positive electrode plate and an electrolyte solution. The both plates are arranged so as to face each other in a thickness direction and immersed in the electrolyte solution. The negative electrode plate includes an active material containing carbon. An elastic sheet formed of a porous material is arranged between the negative electrode plate and the positive electrode plate so as to press the negative electrode plate from both sides in the thickness direction.Type: GrantFiled: February 20, 2012Date of Patent: June 27, 2017Assignee: GS Yuasa International Ltd.Inventor: Yoshiomi Fujiwara
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Patent number: 9680155Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: an inner electrode comprising a wire-type inner current collector having a first metal tab formed to be extended in a predetermined length at one end thereof, and an inner electrode active material layer formed on the surface of the inner current collector; a separator layer formed on the outer surface of the inner electrode active material layer; and an outer electrode formed on the outer surface of the separator layer, and comprising an outer electrode active material layer and an outer current collector having a second metal tab formed to be extended in a predetermined length at one end thereof.Type: GrantFiled: July 9, 2013Date of Patent: June 13, 2017Assignee: LG Chem, Ltd.Inventors: Yo-Han Kwon, Sang-Wook Woo, Hye-Ran Jung, Je-Young Kim
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Patent number: 9673444Abstract: Disclosed is a method of manufacturing an electrode for a secondary battery including an electrode mixture including an electrode active material, binder and conductive material coated on a current collector. Provided are a method including surface-treating the current collector such that an aluminum oxide (Al2O3) layer of 40 nm or less is formed on the current collector so as to enhance adhesion between the electrode mixture and the current collector, and an electrode for a secondary battery manufactured using the same.Type: GrantFiled: September 11, 2014Date of Patent: June 6, 2017Assignee: LG Chem, Ltd.Inventors: Daehong Kim, Jae Hyun Lee, Tae Jin Park
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Patent number: 9666867Abstract: An object of the present invention is to provide an aluminum alloy foil for an electrode current collector, the foil having a high strength after the drying step while keeping a high electrical conductivity. Disclosed is a method for manufacturing an aluminum alloy foil for electrode current collector, including: maintaining an aluminum alloy ingot comprising 0.03 to 0.1% of Fe, 0.01 to 0.1% of Si, 0.0001 to 0.01% of Cu, 0.005% or less of Mn, with the rest being Al and unavoidable impurities, at 550 to 620° C. for 1 to 20 hours, and subjecting the resulting ingot under a hot rolling with a starting temperature of 500° C. or higher and an end-point temperature of 255 to 300° C.Type: GrantFiled: July 29, 2011Date of Patent: May 30, 2017Assignees: UACJ CORPORATION, UACJ FOIL CORPORATIONInventors: Masakazu Seki, Satoshi Suzuki, Kenji Yamamoto, Tomohiko Furutani
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Patent number: 9666861Abstract: An electrode comprises carbon nanoparticles and at least one of metal particles, metal oxide particles, metalloid particles and/or metalloid oxide particles. A surfactant attaches the carbon nanoparticles and the metal particles, metal oxide particles, metalloid particles and/or metalloid oxide particles to form an electrode composition. A binder binds the electrode composition such that it can be formed into a film or membrane. The electrode has a specific capacity of at least 450 mAh/g of active material when cycled at a charge/discharge rate of about 0.1C.Type: GrantFiled: April 25, 2015Date of Patent: May 30, 2017Assignee: South Dakota Board of RegentsInventors: Haiping Hong, David R. Salem, Gregory Lee Christensen, Ruidong Yang
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Patent number: 9640835Abstract: An ion conducting glass-ceramics represented by the general formula (I): Na2S-MxSy—NaSb, wherein M and N are different and selected from P, Si, Ge, B, Al and Ga; x, y, a and b are integers indicating the stoichiometric ratio depending on the species of M and N; and the content of Na2S is more than 60 mol % and less than 80 mol %.Type: GrantFiled: February 20, 2013Date of Patent: May 2, 2017Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Akitoshi Hayashi, Masahiro Tatsumisago
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Patent number: 9620780Abstract: The present disclosure provides an anode for a secondary battery, including: an electrode current collector; a first coating layer formed on the electrode current collector and including an anode active material, a first nonaqueous binder and a conducting material; and a second coating layer formed on the first coating layer and including a second nonaqueous binder. Since the anode of the present disclosure can reduce volume change of the anode active material, a lithium secondary battery including same may have improved cycle characteristics.Type: GrantFiled: May 30, 2014Date of Patent: April 11, 2017Assignee: LG Chem, Ltd.Inventors: Bong Hyun Jeong, Im Goo Choi, Byoung Bae Lee, Kyoung Hun Kim, Jang Bae Kim
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Patent number: 9590265Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: an inner electrode having an inner current collector and an inner electrode active material layer surrounding the outer surface of the inner current collector; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer and having an outer electrode active material layer and an open-structured outer current collector.Type: GrantFiled: March 13, 2014Date of Patent: March 7, 2017Assignee: LG Chem, Ltd.Inventors: Yo-Han Kwon, Byung-Hun Oh, Je-Young Kim, Heon-Cheol Shin
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Patent number: 9559362Abstract: The nonaqueous electrolyte secondary battery of the invention includes: a wound-type electrode group including a long positive electrode, a long negative electrode, and a separator disposed between the positive electrode and the negative electrode; a nonaqueous electrolyte; and a prismatic battery case accommodating the electrode group and the nonaqueous electrolyte. A horizontal cross-section of the electrode group has a major axis and a minor axis. The positive electrode includes a positive electrode current collector and a positive electrode active material layer disposed thereon, and the negative electrode includes a negative electrode current collector and a negative electrode active material layer disposed thereon. A tensile strength of the positive electrode when an elongation percentage in a longitudinal direction of the positive electrode is 1% is not greater than 15 N/cm.Type: GrantFiled: March 31, 2009Date of Patent: January 31, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshiyuki Muraoka, Yukihiro Okada
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Patent number: 9553299Abstract: A negative electrode sheet of a lithium-ion secondary battery has a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer contains flake graphite particles and has a first region neighboring the negative electrode current collector and a second region neighboring a surface side that are different in perpendicularity of the graphite particles. The perpendicularity of the graphite particles is defined as (m1/m2), where, when the inclination ?n of each of the graphite particles is specified relative to a surface of the negative electrode current collector, m1 is the number of the graphite particles having an inclination ?n of 60°??n?90° and m2 is the number of the graphite particles having an inclination ?n of 0°??n?30°.Type: GrantFiled: July 29, 2011Date of Patent: January 24, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Takahata, Hideki Sano
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Patent number: 9496552Abstract: The subject matter of the invention are transition-metal-free nitrogen-containing hydride anodes of the general formula LioNH3-o, where o=1, 2 or 3, and wherein said transition-metal-free nitrogen-containing hydride anodes, in the charged state, are mixed with lithium hydride, and electrochemical elements, for example lithium batteries, which contain said transition-metal-free nitrogen-containing hydride anodes as the anode. The invention also describes methods for producing transition-metal-free nitrogen-containing hydride anode materials and electrochemical elements comprising transition-metal-free nitrogen-containing hydride anodes.Type: GrantFiled: October 26, 2010Date of Patent: November 15, 2016Inventor: Ulrich Wietelmann
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Patent number: 9437855Abstract: A lithium accumulator includes at least two three-dimensional electrodes separated by a separator and encased together into an accumulator body with an electrolyte that is a non-aqueous solution of a lithium salt in an organic polar solvent. The two electrodes have a minimum thickness of 0.5 mm each. At least one electrode is a homogenous, compressed mixture of an electron conductive component and an active material. The active material is capable of absorbing and extracting lithium in the presence of electrolyte. The porosity of the pressed electrodes is 25 to 90%. The active material has morphology of hollow spheres with a wall thickness of maximum 10 micrometers, or morphology of aggregates or agglomerates of maximum 30 micrometers in size. The separator includes a highly porous electrically insulating ceramic material with open pores and porosity from 30 to 95%.Type: GrantFiled: September 18, 2009Date of Patent: September 6, 2016Assignee: HE3DA s.r.o.Inventors: Jan Prochazka, Jr., Jan Prochazka
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Patent number: 9397338Abstract: Electrodes and methods of forming electrodes are described herein. The electrode can be an electrode of an electrochemical cell or battery. The electrode includes a current collector and a film in electrical communication with the current collector. The film may include a carbon phase that holds the film together. The electrode further includes an electrode attachment substance that adheres the film to the current collector.Type: GrantFiled: December 21, 2011Date of Patent: July 19, 2016Assignee: ENEVATE CORPORATIONInventors: Benjamin Park, Sung Won Choi, Ian Browne, William Schank
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Patent number: 9391315Abstract: A negative electrode for a lithium ion battery 10 includes a negative electrode current collector 11, a negative electrode active material layer 14, and a lithium silicate layer 15. The negative electrode active material layer 14 contains silicon. The lithium silicate layer 15 contains lithium, oxygen, and silicon forming a Li—O—Si bond, and is formed at the interface between the negative electrode current collector 11 and the negative electrode active material layer 14. The negative electrode active material layer 14 and the lithium silicate layer 15 may be composed of columnar bodies.Type: GrantFiled: April 21, 2011Date of Patent: July 12, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kazuya Iwamoto, Kunihiko Mineya, Shuji Ito
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Patent number: 9379380Abstract: Disclosed are an anode active material for lithium secondary batteries and a method for manufacturing same, the anode active material comprising: a core part including a carbon-silicon complex and having a cavity therein; and a coated layer which is formed on the surface of the core part and includes a phosphor-based alloy.Type: GrantFiled: May 1, 2014Date of Patent: June 28, 2016Assignee: LG Chem, Ltd.Inventors: Sang-Wook Woo, Je-Young Kim
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Patent number: 9231245Abstract: A positive electrode plate for a nonaqueous electrolyte secondary battery, the positive electrode plate including: a positive electrode substrate; a positive electrode active material layer formed on the positive electrode substrate; and a positive electrode substrate exposed portion on which the positive electrode active material layer is not formed, the positive electrode substrate exposed portion having a region that is adjacent to the positive electrode active material layer and has a protective layer formed thereon, the positive electrode active material layer and the protective layer containing polyvinylidene fluoride, and the weight average molecular weight Mw of the polyvinylidene fluoride contained in the protective layer being larger than the weight average molecular weight Mw of the polyvinylidene fluoride contained in the positive electrode active material layer.Type: GrantFiled: March 15, 2012Date of Patent: January 5, 2016Assignee: SANYO Electric Co., Ltd.Inventors: Tetsuya Matsuda, Naoki Ogawa, Keisuke Minami, Toyoki Fujihara, Toshiyuki Nohma
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Patent number: 9136537Abstract: Disclosed is a rechargeable lithium battery including: a positive electrode; a negative electrode including a negative current collector including a copper foil having elongation of about 5% to about 10% and a particle size of about 1 ?m to about 20 ?m, and a negative active material layer provided on the negative current collector; and an electrolyte solution.Type: GrantFiled: October 28, 2010Date of Patent: September 15, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Sung-Hwan Moon, Jae-Hyuk Kim, Hee-Young Chu, Jong-Seo Choi
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Patent number: 9130234Abstract: An electrochemical apparatus (e.g., a battery (cell)) including an aqueous electrolyte with electrode stabilizing additives and one or two electrodes (e.g., an anode and/or a cathode), one or both of which is a Prussian Blue analog material of the general chemical formula AxP[R(CN)6-jLj]z.nH2O, where: A is a cation; P is a metal cation; R is a transition metal cation, L is a ligand that may be substituted in the place of a CN? ligand; 0?x?2; 0?z?1; and 0?n?5 with the electrolyte including an additive to reduce capacity loss of the electrode(s).Type: GrantFiled: May 13, 2013Date of Patent: September 8, 2015Assignee: Alveo Energy, Inc.Inventors: Colin Deane Wessells, Robert Alan Huggins
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Patent number: 9093713Abstract: The present invention relates to a method for producing a lead-base alloy grid for lead-acid battery having excellent mechanical strength, corrosion resistance and growth resistance, including two-step heat treatment of a Pb—Ca—Sn alloy grid containing 0.06% by mass or less of calcium, the first heat treatment being conducted at a temperature of 40° C. to 110° C., the second heat treatment being conducted at a temperature of 90° C. to 140° C., and the first heat treatment being conducted at a lower temperature than the second heat treatment.Type: GrantFiled: August 6, 2009Date of Patent: July 28, 2015Assignee: THE FURUKAWA BATTERY CO., LTD.Inventors: Jun Furukawa, Kazuo Matsushita
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Patent number: 9083055Abstract: An electrode for a rechargeable lithium battery and method of manufacturing a rechargeable lithium battery including the electrode is disclosed. In one embodiment, the electrode includes i) a current collector, ii) a first electrode composition layer provided on a surface of the current collector and iii) a second electrode composition layer farther than the first electrode composition layer from the current collector. Further, each of the first and second electrode composition layers comprises an active material and a conductive material, and wherein the amount of the conductive material of the first electrode composition layer is different from that of the conductive material of the second electrode composition layer.Type: GrantFiled: October 7, 2009Date of Patent: July 14, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Nam-Soon Choi, Sae-Weon Roh, Yong-Chul Park, Sung-Soo Kim, So-Hyun Hur
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Patent number: 9083043Abstract: In order to increase the electrochemical stability of a cathode material for lithium cells, the cathode material includes an iron-doped lithium titanate. A method for manufacturing a lithium titanate includes: a) calcinating a mixture of starting materials to form an iron-doped lithium titanate; and b) at least one of electrochemical insertion and chemical insertion of lithium into the iron-doped lithium titanate.Type: GrantFiled: December 28, 2012Date of Patent: July 14, 2015Assignee: ROBERT BOSCH GMBHInventors: Hideki Ogihara, Ingo Kerkamm, Ulrich Eisele, Jitti Kasemchainan
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Publication number: 20150147598Abstract: A method for producing a battery resulting from the joining with a plurality of weld nuggets therebetween of a foil layered part, at which foil exposed portions exposing an aluminum foil overlap, and a positive terminal member made of aluminum, includes: a formation step for forming at the foil layered part a foil welded part at which are formed, by welding aluminum foils together by means of ultrasonic welding, a first high-position part at at least a section of a surface to be joined, and a plurality of first low-position parts distributed at scattered points within the first high-position part; and a resistance-welding step for contacting the first high-position part to the positive terminal member, generating weld nuggets at the first low-position part by flowing an electric current, and resistance-welding the foil welded part and the positive terminal member with the weld nuggets therebetween.Type: ApplicationFiled: June 28, 2012Publication date: May 28, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toshihiko Inoue, Masaharu Miyahisa, Hajime Konishi, Koichi Toriyama
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Publication number: 20150140476Abstract: High surface area electrodes formed using sol-gel derived monoliths as electrode substrates or electrode templates, and methods for making high surface area electrodes are described. The high surface area electrodes may have tunable pore sizes and well-controlled pore size distributions. The high surface area electrodes may be used as electrodes in a variety of energy storage devices and systems such as capacitors, electric double layer capacitors, batteries, and fuel cells.Type: ApplicationFiled: November 20, 2013Publication date: May 21, 2015Applicant: Nanotune Technologies Corp.Inventors: Vinod M.P. NAIR, David MARGOLESE, Samir J. ANZ, Shiho WANG
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Publication number: 20150132648Abstract: To inhibit degradation of charge and discharge cycle characteristics of a secondary battery. To suppress generation of defects due to expansion and contraction of an active material in a negative electrode. To inhibit deterioration of an electrode due to changes in its form. An electrode member including a current collector, an active material, and a porous body is used. The porous body is in contact with one surface of the current collector and includes a plurality of spaces. The active material is located in the space in the porous body. The space has a larger size than the active material.Type: ApplicationFiled: October 30, 2014Publication date: May 14, 2015Inventors: Nobuhiro INOUE, Ryota TAJIMA, Naoki KURIHARA, Junpei MOMO
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Publication number: 20150132657Abstract: The present invention provides an aluminum alloy foil for electrode current collector, high in strength and superior in heat resistance after the active material coating/drying process of the manufacture of the battery, a manufacturing method thereof, and a lithium ion secondary battery. According to the present invention, an aluminum alloy foil for electrode current collector, including 0.1 to 0.5 mass % (hereinafter mass % is referred to as %) of Fe, 0.01 to 0.5% of Si, 0.01 to 0.2% of Cu, 0.01 to 0.5% of Mn, with the rest being Al and unavoidable impurities, wherein tensile strength of an aluminum alloy foil and a heat treatment selected from 24 hours at 100° C., 3 hours at 150° C., and 15 minutes at 200° C., is 210 MPa or higher, a manufacturing method thereof, and a lithium ion secondary battery are provided.Type: ApplicationFiled: April 19, 2013Publication date: May 14, 2015Inventors: Tomohiko Furutani, Kenji Yamamoto, Satoshi Suzuki, Masakazu Seki
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Publication number: 20150132658Abstract: An object of the present invention is to provide a copper foil inexpensive and sufficient in tensile strength even after heat treatment. The copper foil includes zinc in a content range of 0.02% by mass to 2.7% by mass in the total mass of the entire copper foil, and if the regions in thicknesses direction from both surfaces of the copper foil where occupies 5% by mass in the total mass of the entire copper foil are referred to as the respective external layers and a region between one external layer and the other external layer is referred to as an internal layer, the internal layer includes copper as a main element and includes 100 ppm or more of one or mixture of small amount-elements selected from carbon, sulfur, chlorine and nitrogen, and includes zinc at 10% or more in the total mass of zinc included in the entire copper foil.Type: ApplicationFiled: May 21, 2013Publication date: May 14, 2015Applicant: MITSUI MINING & SMELTING CO., LTD.Inventors: Koichi Miyake, Tomoyuki Maeda, Kazutaka Hozumi, Hiroaki Nakahara, Shinichi Yamauchi
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Patent number: 9029021Abstract: A method of charging and discharging a battery that includes an anode. The anode includes silicon and is capable of inserting and extracting lithium. At the time of charge, the potential of the anode vs. lithium metal as a reference potential is 0.04 V or more. At the time of discharge, the potential of the anode vs. lithium metal as a reference potential is 1.4 V or less.Type: GrantFiled: April 16, 2010Date of Patent: May 12, 2015Assignee: Sony CorporationInventor: Tadahiko Kubota
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Publication number: 20150125758Abstract: Disclosed is a preparation method of graphene film. The method comprises the following steps: providing a clean substrate, followed by positively charged processing of the substrate surface; preparing suspension of graphene with negative charges on surface and the suspension of graphene with positive charges on surface respectively; immersing the surface-treated substrate into the suspension of graphene with negative charges on surface for 5-20 minutes, then taking the substrate out, washing, drying, and then immersing it into the suspension of graphene with positive charges on surface for 5-20 minutes, then taking the substrate out, washing, drying, so alternately repeated 10 to 50 times to obtain a graphene film precursor, and finally reducing the graphene film precursor at 500-1000° C. to obtain the grapheme film.Type: ApplicationFiled: June 29, 2012Publication date: May 7, 2015Inventors: Mingjie Zhou, Feng Wu, Yaobing Wang
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Publication number: 20150125757Abstract: A current collector, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device capable of providing superior shut down function are provided. According to the present invention, a current collector having a resin layer on at least one side of a conductive substrate, wherein: the resin layer has a thermoplastic resin dispersed in a thermosetting resin base material, the thermoplastic resin encapsuling a conductive agent; a value given by (average thickness of the conductive agent)/(average thickness of the thermoplastic resin) is 0.5 to 3; the conductive agent is formulated so that a value of volume % given by (conductive agent)/(conductive agent+thermoplastic resin) is 10 to 50%; and formulation ratio of the thermoplastic resin is 10 to 65%, is provided.Type: ApplicationFiled: May 10, 2013Publication date: May 7, 2015Applicants: UACJ CORPORATION, UACJ FOIL CORPORATIONInventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Tsugio Kataoka, Satoshi Yamabe
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Publication number: 20150118569Abstract: An electric storage device according to the present invention includes: an electrode assembly including positive and negative electrode plates that are insulated from each other, at least one of the electrode plates having an active material layer formed part and an active material layer non-formed part; positive and negative current collectors; and a metal material abutted against the active material layer non-formed part, wherein the metal material includes a curled part in which an edge of the metal material is curved in a direction away from the active material layer non-formed part, and the active material layer non-formed part, each of the current collectors, and the metal material are integrally coupled.Type: ApplicationFiled: March 13, 2013Publication date: April 30, 2015Inventors: Satoshi Murakami, Masamitsu Tononishi
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Patent number: 9017877Abstract: A current collector for a nonaqueous solvent secondary battery, which includes: a first metal layer; and a second metal layer stacked on a surface of the first metal layer, is composed so that a Young's modulus (E1), Vickers hardness (Hv1) and thickness (T1) of the first metal layer and a Young's modulus (E2), Vickers hardness (Hv2) and thickness (T2) of the second metal layer can satisfy the following Expression: (E1>E2 or Hv1>Hv2); and T1<T2.Type: GrantFiled: May 23, 2008Date of Patent: April 28, 2015Assignee: Nissan Motor Co., Ltd.Inventors: Hajime Sato, Kenji Hosaka, Hideaki Horie
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Publication number: 20150104712Abstract: Provided is a current collecting assembly for use in an electrochemical cell. In some embodiments, the current collecting assembly comprises a current collecting substrate having a first side defining a first surface, and a second side defining a second surface. Each of the first and second surfaces defines a surface area. The current collecting assembly further comprises a first assembly of reinforcing structures disposed on and attached to the first side of the current collecting substrate. The current collecting substrate comprises a conductive material. The first assembly of reinforcing structures comprises a first set of reinforcing structures. The first set of reinforcing structures comprises a first polymer material. The first assembly of reinforcing structures mechanically reinforces the current collecting substrate.Type: ApplicationFiled: October 15, 2014Publication date: April 16, 2015Applicant: Nexeon LimitedInventors: Marie Kerlau, Madhuri Thakur
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Publication number: 20150099170Abstract: At least one foil surface of an aluminum foil is roughened; and in arithmetic mean roughnesses Ra, stipulated in JIS B 0601:2001, of the roughened surface(s), A, which is the arithmetic mean roughness Ra measured in a direction at a right angle to a rolling direction during foil rolling, and B, which is the arithmetic mean roughness Ra measured in a direction parallel to the rolling direction during foil rolling, satisfy the following relationships: 0.15 ?m?A?2.0 ?m; 0.15 ?m?B?2.0 ?m; and 0.5?B/A?1.5. Preferably 50-1000 ?g/m2 of oil is adhered to the roughened foil surface. The oil is preferably rolling oil.Type: ApplicationFiled: September 6, 2012Publication date: April 9, 2015Applicant: UACJ CORPORATIONInventors: Tetsuya Motoi, Yasushi Funato
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Publication number: 20150093649Abstract: An object of the present invention is to provide a method of producing a current collector for an electrochemical element that enable rapid charging and discharging with low internal resistance. The method of producing a current collector for an electrochemical element in the present invention has a step for coating a coating liquid onto a metal foil, the coating liquid containing at least one substance selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxyethyl ethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl starch, hydroxypropyl starch, dextrin, pullulan, dextran, guar gum and hydroxypropyl guar gum; an organic acid having valence of two or more or a derivative thereof, carbon particles and an organic solvent, followed by removing the organic solvent and forming a coating layer on the metal foil.Type: ApplicationFiled: March 15, 2013Publication date: April 2, 2015Inventors: Yoshikazu Arai, Nobuyuki Kobayashi, Seiji Doi, Hitoshi Yokouchi, Masahiro Ohmori
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Publication number: 20150086841Abstract: According to one embodiment, a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a separator, a copper-containing member, and a nonaqueous electrolyte is provided. The negative electrode includes a negative electrode current collector and a negative electrode active material-containing layer. The negative electrode current collector includes aluminum or aluminum alloy. The negative electrode active material-containing layer is formed on the negative electrode current collector. The copper-containing member includes copper or copper alloy. The copper-containing member is electrically connected to the negative electrode current collector to prevent from over-discharge.Type: ApplicationFiled: September 18, 2014Publication date: March 26, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Norio TAKAMI, Hiroki INAGAKI, Wen ZHANG
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Publication number: 20150086881Abstract: A unitary graphene-based current collector in a battery or capacitor. The current collector is or contains a unitary graphene layer that is composed of closely packed and chemically bonded parallel graphene planes having an inter-graphene plane spacing of 0.335 to 0.40 nm and an oxygen content less than 5% by weight (more typically 0.001% to 1%), an average grain size larger than 5 ?m (more typically >100 ?m; some as large as >cm), a physical density higher than 1.8 g/cm3, and is obtained from heat-treating a graphene oxide gel at a temperature higher than 100° C. (typically and preferably from 1,000 to 3,000° C.). Such an integrated or unitary graphene entity is compatible with essentially all electrolytes commonly used in batteries and supercapacitors.Type: ApplicationFiled: September 23, 2013Publication date: March 26, 2015Inventors: Aruna Zhamu, Bor Z. Jang, Guorong Chen
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Publication number: 20150064571Abstract: A current collector structure includes a metal foil substrate and a graphene conductive layer provided on at least one surface of the metal foil substrate. The graphene conductive layer includes a plurality of graphene sheets and a polymer binder used to bind the graphene sheets together and to adhere the graphene sheets onto the metal foil substrate. The conductive layer has a thickness of 0.1 ?m to 5 ?m and a resistance less than 1 ?-cm. The polymer binder increases the adhesion force, such that the integrated conductive network is thus formed. Since the polymer binder is well compatible with the binder as the active material contained in the electrochemical element. The active material of the electrochemical element is thus tightly bound with the graphene conductive layer so as to minimize the contact resistance and greatly improve the performance of the electrochemical element.Type: ApplicationFiled: December 5, 2013Publication date: March 5, 2015Applicant: Enerage Inc.Inventors: Mark Y. Wu, Cheng-Yu Hsieh, Rui-Jun Cheng, Shu-Ling Hsieh, Jing-Ru Chen
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Publication number: 20150050559Abstract: The present invention relates to current collectors, electrode structures, non-aqueous electrolyte batteries, and electrical storage devices (electrical double layer capacitors, lithium ion capacitors, and the like) that are capable to realize superior battery characteristics by suitably forming an active material layer by using an aqueous solvent. A current collector having a resin layer on at least one side of a conductive substrate, the resin layer being formed by a composition for current collector including an acryl-based resin containing acrylic acid ester and acryl amide or derivatives thereof as a main component; melamine or derivatives thereof; and carbon particles, is provided.Type: ApplicationFiled: April 12, 2013Publication date: February 19, 2015Applicants: UACJ Corporation, UACJ Foil CorporationInventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Tsugio Kataoka, Satoshi Yamabe
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Patent number: 8956765Abstract: A lithium ion battery includes at least one battery cell. The battery cell includes a cathode electrode, an anode electrode, and a separator. The separator is sandwiched between the cathode electrode and the anode electrode. At least one of the cathode electrode and the anode electrode includes a current collector. The current collector includes a graphene layer and a carbon nanotube layer.Type: GrantFiled: October 29, 2012Date of Patent: February 17, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Jia-Ping Wang, Kai-Li Jiang, Shou-Shan Fan
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Publication number: 20150037684Abstract: A steel foil according to an aspect of the present invention includes, by mass %, C: 0.0001 to 0.02%; Si: 0.001 to 0.01%; Mn: 0.01 to 0.3%; P: 0.001 to 0.02%; S: 0.0001 to 0.01%; Al: 0.0005 to 0.1%; N: 0.0001 to 0.004%; and a balance consisting of Fe and impurities, wherein a thickness is 5 to 15 ?m, and a tensile strength is more than 900 MPa and 1.200 MPa or less.Type: ApplicationFiled: April 18, 2013Publication date: February 5, 2015Inventors: Kiyokazu Ishizuka, Yuji Kubo, Jun Nakatsuka, Shuji Nagasaki
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Publication number: 20150037689Abstract: Provided is a lithium secondary battery with three-dimensional network porous bodies as current collectors in which the internal resistance does not increase even after repeated charging and discharging. A lithium secondary battery including a positive electrode and a negative electrode each having as a current collector a three-dimensional network porous body, the positive electrode and the negative electrode being formed by filling at least an active material into pores of the three-dimensional network porous bodies, wherein the three-dimensional network porous body for the positive electrode is a three-dimensional network aluminum porous body having a hardness of 1.2 GPa or less, and the three-dimensional network porous body for the negative electrode is a three-dimensional network copper porous body having a hardness of 2.6 GPa or less.Type: ApplicationFiled: February 22, 2013Publication date: February 5, 2015Inventors: Junichi Nishimura, Kazuhiro Gotou, Akihisa Hosoe, Kentarou Yoshida
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Publication number: 20150024270Abstract: An electron collector structure and a lithium battery including the same are disclosed. The electron collector structure includes a conductive thin film; and a graphene layer that is coated on the surface of the conductive thin film and may improve the electrical conductivity of an electrode plate. As an electrode of the lithium battery includes the electron collector structure, the electrical conductivity of the electrode may be increased so that the energy consumption properties as well as the lifespan characteristics of the lithium battery may be also improved.Type: ApplicationFiled: June 10, 2014Publication date: January 22, 2015Inventors: Han-Eol Park, Seon-Young Kwon, Do-Hyung Park, Jong-Seo Choi, Ji-Hyun Kim, Min-Han Kim, Joong-Ho Moon, Kyoung-Hyun Kim
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Publication number: 20150017550Abstract: Provided are a current collector, an electrode, and a nonaqueous electrolyte secondary battery, each of which capable of reducing internal resistance and producing cost. More specifically, provided are: a three-dimensional network metal porous body for a current collector, comprising a sheet-shaped three-dimensional network metal porous body, wherein a degree of porosity of the sheet-shaped three-dimensional network metal porous body is 90% or more and 98% or less, and a 30%-cumulative pore diameter (D30) of the sheet-shaped three-dimensional network metal porous body calculated from a fine pore diameter measurement conducted by a bubble point method is 20 ?m or more and 100 ?m or less; an electrode using the three-dimensional network metal porous body; and a nonaqueous electrolyte secondary battery including the electrode.Type: ApplicationFiled: February 22, 2013Publication date: January 15, 2015Inventors: Junichi Nishimura, Kazuhiro Gotou, Akihisa Hosoe, Kentarou Yoshida
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Publication number: 20150017549Abstract: Provided an all-solid lithium secondary battery hardly gives rise to internal resistance even if charging and discharging are repeated. The all-solid lithium secondary battery including a positive electrode and a negative electrode, each of electrodes being an electrode in which a three-dimensional network porous body is used as a current collector and pores of the three-dimensional network porous body are filled with at least an active material, wherein the three-dimensional network porous body of the positive electrode includes an aluminum alloy with a Young's modulus of 70 GPa or higher and the three-dimensional network porous body of the negative electrode includes a copper alloy with a Young's modulus of 120 GPa or higher.Type: ApplicationFiled: February 22, 2013Publication date: January 15, 2015Inventors: Junichi Nishimura, Kazuhiro Gotou, Akihisa Hosoe, Kentarou Yoshida
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Publication number: 20150017500Abstract: The present disclosure provides a sheet-form electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on one surface of the current collector; a conductive layer formed on the electrode active material layer and comprising a conductive material and a binder; and a first porous supporting layer formed on the conductive layer. The sheet-form electrode for a secondary battery according to the present disclosure has supporting layers on at least one surfaces thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.Type: ApplicationFiled: September 4, 2014Publication date: January 15, 2015Applicant: LG Chem, Ltd.Inventors: Yo-Han Kwon, Hye-Ran Jung, Eun-Kyung Kim, Je-Young Kim, Hyo-Mi Kim
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Publication number: 20150017545Abstract: Batteries comprise a carbon fibre electrode construction of the invention and have improved DCA and/or CCA, and/or may maintain DCA with an increasing number of charge-discharge cycles, and thus may be particularly suitable for use in hybrid vehicles.Type: ApplicationFiled: March 8, 2013Publication date: January 15, 2015Inventors: Shane Christie, Yoon San Wong, Grigory Titelman, John Abrahamson
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Publication number: 20150004482Abstract: Electrodes, energy storage devices using such electrodes, and associated methods are disclosed. In an example, an electrode for use in an energy storage device can comprise porous disks comprising a porous material, the porous disks having a plurality of channels and a surface, the plurality of channels opening to the surface; and a structural material encapsulating the porous disks; where the structural material provides structural stability to the electrode during use.Type: ApplicationFiled: June 28, 2013Publication date: January 1, 2015Inventors: Donald S. Gardner, Charles W. Holzwarth, Bum Ki Moon, Yang Liu, Priyanka Pande, Shanthi Murali, Nicolas Cirigliano, Zhaohui Chen
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Publication number: 20150004480Abstract: Electrodes, energy storage devices using such electrodes, and associated methods are disclosed. In an example, an electrode for use in an energy storage device can comprise porous silicon having a plurality of channels and a surface, the plurality of channels opening to the surface; and a structural material deposited within the channels; wherein the structural material provides structural stability to the electrode during use.Type: ApplicationFiled: June 28, 2013Publication date: January 1, 2015Inventors: Donald S. Gardner, Charles W. Holzwarth
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Publication number: 20150004471Abstract: Ultrafast battery devices having enhanced reliability and power density are provided. Such batteries can include a cathode including a first silicon substrate having a cathode structured surface, an anode including a second silicon substrate having an anode structured surface positioned adjacent to the cathode such that the cathode structured surface faces the anode structured surface, and an electrolyte disposed between the cathode and the anode. The anode structured surface can be coated with an anodic active material and the cathode structured surface can be coated with a cathodic active material.Type: ApplicationFiled: June 28, 2013Publication date: January 1, 2015Inventors: Zhaohui Chen, Yang Liu, Charles W. Holzwarth, Nicolas Cirigliano, Bum Ki Moon
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Publication number: 20140370349Abstract: The present disclosure provides a sheet-form electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on one surface of the current collector; and a first porous supporting layer formed on the electrode active material layer. The sheet-form electrode for a secondary battery according to the present disclosure has supporting layers on at least one surface thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.Type: ApplicationFiled: August 29, 2014Publication date: December 18, 2014Applicant: LG Chem, Ltd.Inventors: Yo-Han Kwon, Hye-Ran Jung, Eun-Kyung Kim, Je-Young Kim, Hyo-Mi Kim