Manganese Component Is Active Material Patents (Class 429/224)
-
Publication number: 20150072237Abstract: Provided is an anode active material including a transition metal-metaphosphate of Chemical Formula 1: M(PO3)2??<Chemical Formula 1> where M is any one selected from the group consisting of titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), ruthenium (Ru), palladium (Pd), and silver (Ag), or two or more elements thereof. Since the anode active material of the present invention is stable and has excellent conversion reactivity while including only transition metal and phosphate without using lithium in which the price thereof is continuously increased, the anode active material of the present invention may improve capacity characteristics.Type: ApplicationFiled: November 13, 2014Publication date: March 12, 2015Applicant: LG Chem, Ltd.Inventors: Sang Wook Woo, Ji Heon Ryu, Eun Kyung Kim, Je Young Kim, Sang Jo An, Min Young Hong
-
Publication number: 20150072239Abstract: A positive electrode active material includes a conductive matrix and a lithium metal compound of a polyanion structure provided on the surface of the conductive matrix. The lithium metal compound is expressed as Li?M0?X?O4-?Z?, in which: M0 is one or more selected from Mn, Co, Ni, Fe, Cu, Cr, Mg, Ca, Zn, and Ti; X is one or more selected from P, As, Si, Mo, and Ge; Z is one or more selected from Al, Mg, Ca, Zn, and Ti, being optionally includable; ? satisfies 0???2.0; ? satisfies 0???1.5; ? satisfies 1???1.5; and ? satisfies 0???1.5.Type: ApplicationFiled: September 9, 2014Publication date: March 12, 2015Inventors: Syuuhei YOSHIDA, Yuta SHIMONISHI, Daisuke SHIBATA
-
Publication number: 20150072238Abstract: Provided is an anode active material including a transition metal-pyrophosphate of Chemical Formula 1 below: M2P2O7??<Chemical Formula 1> where M is any one selected from the group consisting of titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), ruthenium (Ru), palladium (Pd), and silver (Ag), or two or more elements thereof. Since the anode active material of the present invention is stable and has excellent conversion reactivity while including only transition metal and phosphate without using lithium in which the price thereof is continuously increased, the anode active material of the present invention may improve capacity characteristics.Type: ApplicationFiled: November 13, 2014Publication date: March 12, 2015Applicant: LG CHEM, LTD.Inventors: Sang Wook Woo, Ji Heon Ryu, Eun Kyung Kim, Je Young Kim, Sang Jo An, Min Young Hong
-
Publication number: 20150072232Abstract: In a lithium-ion secondary battery (100), positive electrode active material particles (610) each include a shell portion (612) made of a layered lithium-transition metal oxide, a hollow portion (614) formed inside the shell portion (612), and a through-hole (616) penetrating through the shell portion (612). A positive electrode active material layer (223) has a density A of 1.80 g/cm3?A?2.35 g/cm3, and a negative electrode active material layer (243) has a density B of 0.95 g/cm3?B?1.25 g/cm3.Type: ApplicationFiled: March 30, 2012Publication date: March 12, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroki Nagai
-
Publication number: 20150072234Abstract: Dry process based energy storage device structures and methods for using a dry adhesive therein are disclosed.Type: ApplicationFiled: August 22, 2014Publication date: March 12, 2015Inventors: PORTER MITCHELL, XIAOMEI XI, LINDA ZHONG, BIN ZOU
-
Patent number: 8974970Abstract: Provided is a lithium transition metal oxide having an ?-NaFeO2 layered crystal structure, as a cathode active material for lithium secondary battery, wherein the transition metal includes a blend of Ni and Mn, an average oxidation number of the transition metals except lithium is +3 or higher, and the lithium transition metal oxide satisfies Equations 1 and 2: 1.0<m(Ni)/m(Mn)??(1) m(Ni2+)/m(Mn4+)<1??(2) wherein m(Ni)/m(Mn) represents a molar ratio of nickel to manganese and m (Ni2+)/m (Mn4+) represents a molar ratio of Ni2+ to Mn4+. The cathode active material of the present invention has a uniform and stable layered structure through control of oxidation number of transition metals to a level higher than +3, in contrast to conventional cathode active materials, thus advantageously exerting improved overall electrochemical properties including electric capacity, in particular, superior high-rate charge/discharge characteristics.Type: GrantFiled: June 19, 2014Date of Patent: March 10, 2015Assignee: LG Chem, Ltd.Inventors: Sung-Kyun Chang, Hong-Kyu Park, Sinyoung Park, Hyo-shik Kil, Hera Lee
-
Patent number: 8974971Abstract: A positive electrode for a rechargeable lithium ion battery includes a mixture layer including a positive-electrode active material, a conducting agent, and a binder and a collector having the mixture layer formed on the surface thereof. The positive-electrode active material is a composite oxide having an olivine structure expressed by a formula LiaMxPO4 (where M represents a transition metal including at least one of Fe and Mn and a and x satisfy 0<a?1.1 and 0.9?x?1.1). The conducting agent includes fibrous carbon. A carbon coating layer is formed on the surface of the collector. A part of the positive-electrode active material and a part of the fibrous carbon enter pits formed in the carbon coating layer.Type: GrantFiled: July 30, 2012Date of Patent: March 10, 2015Assignee: Hitachi, Ltd.Inventors: Toyotaka Yuasa, Mitsuru Kobayashi, Sai Ogawa, Masanari Oda, Kan Kitagawa
-
Patent number: 8974964Abstract: An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.Type: GrantFiled: November 14, 2005Date of Patent: March 10, 2015Assignee: Spectrum Brands, Inc.Inventors: Akshaya Kumar Padhi, Denis D. Carpenter, Jeffrey A. Poirier
-
Publication number: 20150064577Abstract: A lithium ion secondary battery includes a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the positive electrode contains, as a positive electrode active material, a lithium-containing transition metal compound that belongs to space group Fd3-m and that contains lithium and transition metal M (M represents Mo, or Mo and at least one selected from the group consisting of Mn, Co, Ni, W, and V), a molar ratio of the lithium to the transition metal M is 2.7 or more and 3.3 or less, and a ratio of a mass of the lithium-containing transition metal compound to a total mass of the positive electrode active material in the positive electrode is 0.8 or more.Type: ApplicationFiled: August 1, 2014Publication date: March 5, 2015Inventors: RYUICHI NATSUI, KENSUKE NAKURA
-
ELECTRODE ACTIVE MATERIAL, ELECTRODE INCLUDING THE SAME, AND LITHIUM BATTERY INCLUDING THE ELECTRODE
Publication number: 20150064560Abstract: An electrode active material including an ordered mesoporous metal oxide; and at least one conductive carbon material disposed in a pore of the ordered mesoporous metal oxide. Also, an electrode including the electrode active material, and a lithium battery including the electrode.Type: ApplicationFiled: August 25, 2014Publication date: March 5, 2015Inventors: Jeongkuk SHON, Jaeman CHOI, Junhwan KU, Kuntae KWON, Moonseok KWON, Minsang SONG, Seungsik HWANG, Jiman KIM, Gwiok PARK -
Publication number: 20150064556Abstract: An electrode for a rechargeable battery and a rechargeable battery, the electrode including a current collector; an electrode active material layer; and an electrolyte solution impregnation layer, wherein the electrolyte solution impregnation layer includes a metal oxide and a conductive material.Type: ApplicationFiled: January 17, 2014Publication date: March 5, 2015Applicant: SAMSUNG SDI CO., LTD.Inventors: Jin-Hyon LEE, Ju-Hee SOHN, Jung-Yeon WON, Eun-Young GOH, Jong-Ki LEE, Sang-In PARK
-
Publication number: 20150064557Abstract: Provided are a cathode active material including lithium transition metal phosphate particles, wherein the lithium transition metal phosphate particles include a first secondary particle formed by agglomeration of two or more first primary particles, and a second secondary particle formed by agglomeration of two or more second primary particles in the first secondary particle, and a method of preparing the same. Since the cathode active material according to an embodiment of the present invention may include first primary particles and second primary particles having different average particle diameters, the exfoliation of the cathode active material from a cathode collector may be minimized and performance characteristics, such as high output characteristics and an increase in available capacity, of a secondary battery may be further improved. In addition, since the first secondary particles are porous, the secondary particles are collapsed and fractured due to rolling when used in a cathode.Type: ApplicationFiled: October 21, 2014Publication date: March 5, 2015Applicant: LG Chem, Ltd.Inventors: Ji Hye Kim, Wang Mo Jung, Sang Seung Oh, Byung Chun Park, Sung Bin Park
-
Patent number: 8968915Abstract: Provided is a flat plate electrode cell, comprises positive electrode plates and negative electrode plates. The positive electrode plates each comprise manganese and compressed metal foam. The negative electrode plates each comprise zinc and compressed metal foam. Both the positive and negative electrodes can have alignment tabs, wherein the flat plate electrode cell can further comprise electrical terminals formed from the aligned tabs. The rechargeable flat plate electrode cell of the present disclosure, formed from compressed metal foam, provides both low resistance and high rate performance to the electrodes and the cell. Examples of improvements over round bobbin and flat plate cells are current density, memory effect, shelf life, charge retention, and voltage level of discharge curve. In particular, the rechargeable flat plate electrode cell of the present disclosure provides longer cycle life with reduced capacity fade as compared with known round bobbin and flat plate cells.Type: GrantFiled: September 28, 2009Date of Patent: March 3, 2015Assignee: Encell Technology, Inc.Inventor: Randy Ogg
-
Patent number: 8968917Abstract: Provided is a flat plate electrode cell, comprises positive electrode plates and negative electrode plates. The positive electrode plates each comprise manganese and compressed metal foam. The negative electrode plates each comprise zinc and compressed metal foam. Both the positive and negative electrodes can have alignment tabs, wherein the flat plate electrode cell can further comprise electrical terminals tanned from the aligned tabs. The rechargeable flat plate electrode cell of the present disclosure, formed from compressed metal foam, provides both low resistance and high rate performance to the electrodes and the cell. Examples of improvements over round bobbin and flat plate cells are current density, memory effect, shelf life, charge retention, and voltage level of discharge curve. In particular, the rechargeable flat plate electrode cell of the present disclosure provides longer cycle life with reduced capacity fade as compared with known round bobbin and flat plate cells.Type: GrantFiled: July 29, 2013Date of Patent: March 3, 2015Assignee: Encell Technology, Inc.Inventor: Randy Ogg
-
Patent number: 8968931Abstract: The present invention relates to the preparation of a mesoporous substantially pure anatase titanium oxide (meso-TiO2) and its use in electrochemical devices, in particular lithium-ion batteries.Type: GrantFiled: November 8, 2010Date of Patent: March 3, 2015Assignee: National University of SingaporeInventors: Palani Balaya, Ananthanarayanan Krishnamoorthy, Saravanan Kuppan
-
Publication number: 20150056508Abstract: Disclosed is a cathode active material in which lithium cobalt oxide particles and manganese (Mn) or titanium (Ti)-containing lithium transition metal oxide particles co-exist and a method of preparing the same.Type: ApplicationFiled: November 5, 2014Publication date: February 26, 2015Applicant: LG CHEM, LTD.Inventors: Sun Sik Shin, Hye Lim Jeon, Bo Ram Lee, Hong Kyu Park
-
Publication number: 20150056512Abstract: An object is to provide a positive electrode for a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery that allow a high output characteristic. Included are a positive electrode collector and a positive electrode mixture layer formed on at least one surface of the positive electrode collector. The positive electrode mixture layer contains particles 3 of lithium nickel cobalt manganese oxide represented by LiNi0.55Co0.20Mn0.25O2, erbium oxyhydroxide 1 fixed on the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, tungsten trioxide 2 adhering to the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, and a binder.Type: ApplicationFiled: January 31, 2013Publication date: February 26, 2015Applicant: SANYO Electric Co., Ltd.Inventors: Masanobu Takeuchi, Manabu Takijiri, Katsunori Yanagida, Junichi Sugaya, Takeshi Ogasawara
-
Publication number: 20150056511Abstract: To provide a cathode active material for a lithium ion secondary battery, which has high packing properties and high volume capacity density, and a method for its production.Type: ApplicationFiled: November 5, 2014Publication date: February 26, 2015Applicant: AGC SEIMI CHEMICAL CO., LTD.Inventors: Satoshi TAKAMATSU, Yukimitsu WAKASUGI, Megumi UCHIDA
-
Patent number: 8962187Abstract: A negative electrode active material for lithium ion secondary batteries of the present invention includes a lithium-titanium composite oxide that has a composition represented by Li4Ti5-xFexO12 (where x satisfies 0<x?0.3) or Li4Ti5-yMnyO12 (where y satisfies 0<y?0.3) and that has an average particle diameter of primary particles which is not less than 1 ?m.Type: GrantFiled: December 11, 2012Date of Patent: February 24, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Natsumi Goto, Takashi Takeuchi, Masaki Hasegawa
-
Patent number: 8956759Abstract: Disclosed herein is a 3V class spinel oxide with improved high-rate characteristics which has the composition Li1+x[MyMn(2?y)]O4?zSz (0?x?0.1, 0.01?y?0.5, 0.01?z?0.5, and M is Mn, Ni or Mg). Further disclosed is a method for preparing the 3V class spinel oxide by carbonate coprecipitation of starting materials, addition of sulfur, followed by calcining. The 3V class spinel oxide is spherical and has a uniform size distribution. A lithium secondary battery including the 3V class spinel oxide has a constant plateau at a potential of 3V and shows superior cycle characteristics.Type: GrantFiled: September 27, 2005Date of Patent: February 17, 2015Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang UniversityInventors: Yang Kook Sun, Sang Ho Park, Sung Woo Oh
-
Publication number: 20150044556Abstract: The present invention provides a cathode (positive electrode) of a lithium battery and a process for producing this cathode. The electrode comprises a cathode active material-coated graphene sheet and the graphene sheet has two opposed parallel surfaces, wherein at least 50% area (preferably >80%) of one of the two surfaces is coated with a cathode active material coating. The graphene material is in an amount of from 0.1% to 99.5% by weight and the cathode active material is in an amount of at least 0.5% by weight (preferably >80% and more preferably >90%), all based on the total weight of the graphene material and the cathode active material combined. The cathode active material is preferably an inorganic material, an organic or polymeric material, a metal oxide/phosphate/sulfide, or a combination thereof. The invention also provides a lithium battery, including a lithium-ion, lithium-metal, or lithium-sulfur battery.Type: ApplicationFiled: August 8, 2013Publication date: February 12, 2015Inventors: Yanbo Wang, Bor Z. Jang, Hui He, Aruna Zhamu
-
Publication number: 20150044567Abstract: A lithium-ion secondary cell according to the present invention is provided with a positive electrode and a negative electrode. The positive electrode contains a lithium-manganese composite oxide partially substituted by magnesium as a positive electrode active material. The negative electrode contains a graphite coated with amorphous carbon as a negative electrode active material, a carbon black-based conductive aid and a fluororesin-based binding agent.Type: ApplicationFiled: March 14, 2013Publication date: February 12, 2015Applicant: Automotive Energy Supply CorporationInventors: Yuji Tanjo, Yukinori Takahashi, Yoshihiro Niida
-
Publication number: 20150044513Abstract: A secondary battery capable of obtaining superior battery characteristics is provided. The cathode according to the technology includes a lithium-containing compound. The lithium-containing compound is a compound obtained by inserting an element M2 different from an element M1 in a crystal structure of a surface layer region of a composite oxide represented by a general formula of Li1+a(MnbCocNi1?b?c)1?aM1dO2?c (the element M2 is Mg or the like). A mole fraction R1 represented by [R1 (percent)=(a substance amount of the element M2/sum of substance amounts of Mn, Co, Ni, and the element M2)×100] on a central side of the lithium-containing compound is smaller than the mole fraction R1 on a surface layer side of the lithium-containing compound.Type: ApplicationFiled: February 14, 2013Publication date: February 12, 2015Inventors: Kazuaki Endoh, Yosuke Hosoya, Hironobu Tsuji, Kazunari Motohashi
-
Publication number: 20150044563Abstract: A composite precursor represented by Formula 1, a composite prepared therefrom represented by Formula 2, a method of preparing a composite precursor and a composite, a positive electrode for lithium secondary battery including the same, and a lithium secondary battery employing the same. aMn3O4-bM(OH)2??Formula 1 wherein in Formula 1, 0<a?0.8, 0.2?b<1 and M is at least one metal selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron, (Fe), cobalt (Co), nickel (Ni), copper (Cu), aluminum (Al), magnesium (Mg), zirconium (Zr), and boron (B) aLi2MnO3-bLiyMO2??Formula 2 wherein in Formula 2, 0?a?0.6, 0.4?b?1 1.0?y?1.05, and M is at least one metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Mg, Zr, and B.Type: ApplicationFiled: May 22, 2014Publication date: February 12, 2015Applicant: Samsung SDI Co., Ltd.Inventors: Seon-Young Kwon, Do-Hyung Park, Min-Han Kim, Ji-Hyun Kim, Joong-Ho Moon, Kyoung-Hyun Kim, Han-Eol Park, Yong-Chan You, Chang-Wook Kim
-
Patent number: 8951435Abstract: Provided is a cathode material for a lithium secondary battery, comprising a heat-treated mixture of an oxide powder (a) represented by Formula I and an oxide powder (b) represented by Formula II, wherein a mixing ratio of the oxide powder (a):oxide powder (b) is in a range of 30:70 to 90:10, the oxide powder (a) is monolithic particles having a D50 of more than 10 ?m, and the oxide powder (b) is agglomerated particles having a D50 of less than 10 ?m, and heat treatment is carried out at a temperature of 400° C. or higher. LiCoO2??(I) LizMO2??(II) wherein 0.95<z<1.1; M=Ni1-x-yMnxCoy, 0<y<0.5, and a ratio of Mn to Ni (x/(1?x?y)) is in a range of 0.4 to 1.1.Type: GrantFiled: March 20, 2007Date of Patent: February 10, 2015Assignee: LG Chem, Ltd.Inventors: Jens M Paulsen, Hong-Kyu Park, Sun Sik Shin, Sinyoung Park, Hyeyun Cha
-
Patent number: 8951674Abstract: A non-aqueous electrolyte secondary battery including: a positive electrode having a positive electrode material mixture containing a composite lithium oxide; a negative electrode; a polyolefin separator; a non-aqueous electrolyte; and a heat-resistant insulating layer interposed between the positive and negative electrodes. The positive electrode material mixture has an estimated heat generation rate at 200° C. of not greater than 50 W/kg. The positive electrode and the negative electrode are wound together with the separator and the heat-resistant insulating layer interposed therebetween.Type: GrantFiled: June 23, 2006Date of Patent: February 10, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Hajime Nishino, Shinji Kasamatsu, Hideharu Takezawa, Kazuhiro Okamura, Mikinari Shimada
-
Patent number: 8951667Abstract: Electrode active material of the invention is mainly an amorphous transition metal complex represented by AxMPyOz (where x and y are values which independently satisfy 0?x?2 and 0?y?2, respectively, and z=(x+5y+valence of M)/2 to satisfy stoichiometry; also, A is an alkali metal and M is a metal element selected from transition metals), and has a peak near 220 cm?1 in Raman spectroscopy. Applying the electrode active material of the invention to a nonaqueous electrolyte secondary battery increases the capacity of the nonaqueous electrolyte secondary battery.Type: GrantFiled: February 15, 2008Date of Patent: February 10, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventor: Motoshi Isono
-
Publication number: 20150037677Abstract: The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising an oxide having a spinel structure and comprising at least Li and Mn as main components and an oxide comprising at least Li and Zr, in which the oxide comprising at least Li and Zr forms a mixed phase comprising two or more phases, and a content of the oxide comprising at least Li and Zr in the positive electrode active substance particles is 0.1 to 4% by weight. The present invention provides positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in high-temperature characteristics and a process for producing the positive electrode active substance particles, and a non-aqueous electrolyte secondary battery.Type: ApplicationFiled: February 22, 2013Publication date: February 5, 2015Applicant: TODA KOGYO CORP.Inventors: Kazumichi Koga, Ryuta Masaki, Akihisa Kajiyama, Hiroaki Masukuni
-
Publication number: 20150037673Abstract: There is provided a positive-electrode material for a lithium secondary battery. The material comprises a lithium oxide compound or a complex oxide as reactive substance. The material also comprises at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material provided as a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, there is provided a method for preparing the material as well as lithium secondary batteries comprising the material.Type: ApplicationFiled: October 4, 2012Publication date: February 5, 2015Inventors: Karim Zaghib, Abdelbast Guerfi, Pierre Hovington, Takehiko Sawai, Shinji Saito, Kazunori Urao
-
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
-
Publication number: 20150037678Abstract: Provided are a cathode active material including polycrystalline lithium manganese oxide and a sodium-containing coating layer on a surface of the polycrystalline lithium manganese oxide, and a method preparing the same. Since the cathode active material according to an embodiment of the present invention may prevent direct contact between the polycrystalline lithium manganese oxide and an electrolyte solution by including the sodium-containing coating layer on the surface of the polycrystalline lithium manganese oxide, the cathode active material may prevent side reactions between the cathode active material and the electrolyte solution. In addition, since limitations, such as the Jahn-Teller distortion and the dissolution of Mn2+, may be addressed by structurally stabilizing the polycrystalline lithium manganese oxide, tap density, life characteristics, and charge and discharge capacity characteristics of a secondary battery may be improved.Type: ApplicationFiled: October 15, 2014Publication date: February 5, 2015Applicant: LG Chem, Ltd.Inventors: Ick Soon Kwak, Seung Beom Cho, Hwa Seok Chae
-
Patent number: 8945498Abstract: To simply manufacture a lithium-containing oxide at lower manufacturing cost. A method for manufacturing a lithium-containing composite oxide expressed by a general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)). A solution containing Li and P is formed and then is dripped in a solution containing M (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) to form a mixed solution. By a hydrothermal method using the mixed solution, a single crystal particle of a lithium-containing composite oxide expressed by the general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) is manufactured.Type: GrantFiled: March 14, 2012Date of Patent: February 3, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Tomoya Futamura
-
Patent number: 8945770Abstract: Disclosed herein is a cathode active material including a lithium transition metal oxide based on at least one transition metal selected from a group consisting of Ni, Mn and Co. The lithium transition metal oxide contains fluorine, and most of the fluorine is present on a surface of the lithium transition metal oxide, and at least one metal selected from a group consisting of Mg, Ti, Zr, Al and Fe as well as sulfur (S) are further contained in the lithium transition metal oxide.Type: GrantFiled: November 10, 2009Date of Patent: February 3, 2015Assignee: LG Chem, Ltd.Inventors: Chang-Wan Koo, Joon Sung Bae, Eun-Young Goh
-
Publication number: 20150030928Abstract: Provided are a cathode active material including polycrystalline lithium manganese oxide and a boron-containing coating layer on a surface of the polycrystalline lithium manganese oxide, and a method preparing the same. Since the cathode active material according to an embodiment of the present invention may prevent direct contact between the polycrystalline lithium manganese oxide and an electrolyte solution by including the boron-containing coating layer on the surface of the polycrystalline lithium manganese oxide, the cathode active material may prevent side reactions between the cathode active material and the electrolyte solution. In addition, since limitations, such as the Jahn-Teller distortion and the dissolution of Mn2+, may be addressed by structurally stabilizing the polycrystalline lithium manganese oxide, tap density, life characteristics, and charge and discharge capacity characteristics of a secondary battery may be improved.Type: ApplicationFiled: October 15, 2014Publication date: January 29, 2015Applicant: LG CHEM, LTD.Inventors: Ick Soon Kwak, Seung Beom Cho, Hwa Seok Chae
-
Publication number: 20150030926Abstract: The object of the present invention is to provide electrolytic manganese dioxide excellent in the middle rate discharge characteristic as compared with conventional electrolytic manganese dioxide, and a method for its production and its application. Electrolytic manganese dioxide characterized in that the potential as measured in a 40 wt % KOH aqueous solution by using a mercury/mercury oxide reference electrode as a standard is higher than 250 mV and less than 310 mV, and the volume of pores having a pore diameter of at least 2 nm and at most 50 nm is at most 0.0055 cm3/g. Of such electrolytic manganese dioxide, the volume of pores having a pore diameter of at least 2 nm and at most 200 nm is preferably at most 0.0555 cm3/g.Type: ApplicationFiled: February 20, 2013Publication date: January 29, 2015Applicant: TOSOH CORPORATIONInventors: Kazumasa Suetsugu, Kazuo Sekitani
-
Publication number: 20150030927Abstract: Provided are polycrystalline lithium manganese oxide particles represented by Chemical Formula 1 and a method of preparing the same: Li(1+x)Mn(2-x-y-f)AlyMfO(4-z)??<Chemical Formula 1> where M is sodium (Na), or two or more mixed elements including Na, 1?x?0.2, 0<y?0.2, 0<f?0.2, and 0?z?0.2. According to an embodiment of the present invention, limitations, such as the Jahn-Teller distortion and the dissolution of Mn2+, may be addressed by structurally stabilizing the polycrystalline lithium manganese oxide particles. Thus, life characteristics and charge and discharge capacity characteristics of a secondary battery may be improved.Type: ApplicationFiled: October 15, 2014Publication date: January 29, 2015Applicant: LG CHEM, LTD.Inventors: Ick Soon Kwak, Seung Beom Cho, Hwa Seok Chae
-
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
-
Publication number: 20150024280Abstract: In a battery production process, a positive electrode active material having a reaction-suppressing layer that does not easily peel off formed on the surface thereof, and a positive electrode and an all-solid-state battery that use said material are provided. The present invention involves positive electrode active material particles for an all-solid-state battery containing sulfide-based solid electrolyte. The positive electrode active material particles are an aggregate containing two or more particles. The surface of the aggregate is coated with a reaction-suppressing layer for suppressing reactions with the sulfide-based solid electrolyte.Type: ApplicationFiled: May 23, 2011Publication date: January 22, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takayuki Uchiyama
-
Publication number: 20150024269Abstract: The invention relates to electrodes that contain active materials of the formula: AaMb(SO4)cXx wherein A is a single or mixed alkali metal phase comprising one or more of sodium, potassium, lithium mixed with sodium, lithium mixed with potassium or lithium mixed with sodium and potassium; M is selected from one or more transition metals and/or non-transition metals and/or metalloids; X is a moiety comprising one or more atoms selected from halogen and OH; and further wherein 1<a<3; b is in the range: 0<b?2; c is in the range: 2?c?3 and x is in the range 0?x?1. Such electrodes are useful in, for example, sodium ion battery applications.Type: ApplicationFiled: January 30, 2013Publication date: January 22, 2015Inventor: Jeremy Barker
-
Patent number: 8936873Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a mixture of a lithium/manganese spinel oxide having a substitution of a manganese (Mn) site with a certain metal ion and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.Type: GrantFiled: March 22, 2010Date of Patent: January 20, 2015Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
-
Patent number: 8936874Abstract: This invention provides a nanocomposite-based lithium battery electrode comprising: (a) A porous aggregate of electrically conductive nano-filaments that are substantially interconnected, intersected, physically contacted, or chemically bonded to form a three-dimensional network of electron-conducting paths, wherein the nano-filaments have a diameter or thickness less than 1 ?m (preferably less than 500 nm); and (b) Sub-micron or nanometer-scale electro-active particles that are bonded to a surface of the nano-filaments with a conductive binder material, wherein the particles comprise an electro-active material capable of absorbing and desorbing lithium ions and wherein the electro-active material content is no less than 25% by weight based on the total weight of the particles, the binder material, and the filaments. Preferably, these electro-active particles are coated with a thin carbon layer. This electrode can be an anode or a cathode.Type: GrantFiled: June 4, 2008Date of Patent: January 20, 2015Assignee: Nanotek Instruments, Inc.Inventors: Jinjun Shi, Aruna Zhamu, Bor Z. Jang
-
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
-
Publication number: 20150017535Abstract: A cathode active material, a preparation method thereof, and a cathode for a lithium secondary battery and a lithium secondary battery including the cathode active material, wherein the cathode active material includes a core active material represented by Formula 1 below; and a coating layer formed on a surface of the core active material, the coating layer including lithium gallium oxide: Lia(A1-x-yBxCy)O2 ??Formula 1 In Formula 1, a, x, y, A, B, and C are defined in the detailed description.Type: ApplicationFiled: November 19, 2013Publication date: January 15, 2015Applicant: SAMSUNG SDI CO., LTD.Inventors: Ming-Zi Hong, Do-Hyung Park, Seon-Young Kwon, Joong-Ho Moon, Ji-Hyun Kim, Han-Eol Park, Min-Han Kim, Myong-A Woo, Ki-Hyun Kim, Sun-Ho Kang
-
Publication number: 20150017497Abstract: The invention is directed towards a cathode active segment for an electrochemical cell. The cathode active segment includes at least one cathode active material, a cross-sectional width including a first curvilinear surface, a second curvilinear surface, a longitudinal length, and at least one cathode mating surface. The at least one cathode mating surface extends along the longitudinal length of the cathode active segment.Type: ApplicationFiled: July 11, 2013Publication date: January 15, 2015Inventor: William Fitler Morris
-
Publication number: 20150017536Abstract: Provided is a non-aqueous electrolyte secondary battery excellent in durability, the non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, wherein a change in volume of the positive electrode active material during charge and discharge is reduced to prevent deterioration of the film with which the surface of the positive electrode active material is coated. In a non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, the positive electrode active material is a lithium-containing composite oxide having a spinel structure, and contains at least one of Ti and Mg as an additional element.Type: ApplicationFiled: March 9, 2012Publication date: January 15, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takeshi Abe, Yoshitomo Takebayashi, Ippei Toyoshima
-
Publication number: 20150017527Abstract: The present invention relates to a negative electrode active material for a rechargeable lithium battery, a method for preparing the same, and a rechargeable lithium battery using the same, and provides a negative electrode active material for a rechargeable lithium battery of a carbon-metal complex or a mixture type, containing a carbon-based active material including a first ceramic coating layer, a metal-based active material or a metal-base active material including a first ceramic coating layer, and a carbon-based active material.Type: ApplicationFiled: November 15, 2013Publication date: January 15, 2015Applicant: POSCO CHEMTECH CO., LTD.Inventors: Kyoung Muk LEE, Heon Young LEE, Mi Ryeong LEE, Eun Byeol HYEONG
-
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
-
Publication number: 20150017538Abstract: Provided is a cathode active material which is superior in safety and cost and makes it possible to provide a nonaqueous secondary battery having a long life. The cathode active material has a composition represented by the following formula (1): LiMn1-xMxP1-yAlyO4 ??(1) (wherein M is at least one selected from the group consisting of Ti, V, Zr, Sn and Y, x is in a range of 0<x?0.5, and y is in a range of 0<y?0.25).Type: ApplicationFiled: December 28, 2012Publication date: January 15, 2015Inventors: Koji Ohira, Motoaki Nishijima, Yuichi Kamimura
-
Patent number: 8932747Abstract: A lithium battery is provided. The lithium battery comprises a first plate, a second plate and a separator. The first plate is composed of a plurality of electrode material layers stacked on one another. At least one of the electrode material layers comprises a thermal activation material. The separator is disposed between the first plate and the second plate.Type: GrantFiled: August 24, 2011Date of Patent: January 13, 2015Assignee: Industrial Technology Research InstituteInventors: Ping-Yao Wu, Wen-Bing Chu, Chang-Rung Yang, Jen-Jeh Lee, Jing-Pin Pan, Jung-Mu Hsu, Shu-Heng Wen, Hung-Chun Wu, Chung-Liang Chang
-
Patent number: 8932760Abstract: An electrode active material, containing ?-MnO2 which is stabilized with a stabilizing cation or molecule with a radius of from 1.35 to 1.55 ?, and wherein a molar ratio of the stabilizing ion or molecule to Mn is from 0.1 to 0.125, is provided. Also provided are a magnesium electrochemical cell having a cathode containing the stabilized ?-MnO2 and a rechargeable magnesium battery having a cathode containing the stabilized ?-MnO2.Type: GrantFiled: March 26, 2013Date of Patent: January 13, 2015Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Ruigang Zhang, Fuminori Mizuno