Alkalated Transition Metal Chalcogenide Component Is Active Material Patents (Class 429/231.1)
-
Patent number: 9187336Abstract: Non-doped and doped lithium titanate Li4Ti5O12 obtainable by the thermal reaction of a stoichiometric composite oxide containing Li2TiO3 and TiO2, the preparation of the stoichiometric composite oxide, as well as a process for the preparation of lithium titanate Li4Ti5O12 and its use as anode material in rechargeable lithium-ion batteries.Type: GrantFiled: April 1, 2014Date of Patent: November 17, 2015Assignee: Sued-Chemie IP GmbH & Co. KGInventors: Michael Holzapfel, Andreas Laumann, Gerhard Nuspl, Karl Fehr, Florian Kiefer
-
Patent number: 9184450Abstract: The present invention provides a lithium-air hybrid battery and a method for manufacturing the same, which has a structure in which a liquid electrolyte electrode and a solid electrolyte electrode are stacked on both sides of an ion conductive glass ceramic. That is, disclosed is a lithium-air hybrid battery and a method for manufacturing the same, which has a structure in which a lithium metal negative electrode includes a liquid electrolyte and a porous air positive electrode comprising a carbon, a catalyst, a binder and a solid electrolyte are separately stacked on both sides of an impermeable ion conductive glass ceramic, and the liquid electrolyte is present only in the lithium metal negative electrode.Type: GrantFiled: October 25, 2011Date of Patent: November 10, 2015Assignee: Hyundai Motor CompanyInventors: Dong Hui Kim, Sam Ick Son, Kyoung Han Ryu, Jun Ki Rhee, Yun Seok Kim, Ho Taek Lee
-
Patent number: 9159996Abstract: A method for synthesizing lithium titanium oxide-based anode active material nanoparticles, and more particularly, a method for synthesizing lithium titanium oxide-based anode active material nanoparticles using a supercritical fluid condition is disclosed herein. The method may include (a) preparing a lithium precursor solution and a titanium precursor solution, (b) forming lithium titanium oxide-based anode active material nanoparticles by introducing the lithium precursor solution and titanium precursor solution into an reactor at a supercritical fluid condition, and (c) cleaning and drying the nanoparticles, and may further include (d) calcinating the nanoparticles at 500-1000° C. for 10 minutes to 24 hours after the step (c).Type: GrantFiled: October 3, 2011Date of Patent: October 13, 2015Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jaehoon Kim, Kyung Yoon Chung, Byung Won Cho, Jon Min Park, Nugroho Agung
-
Patent number: 9147868Abstract: The invention relates to a microporous membrane having a relatively low heat shrinkage values along planar axes of the membrane. The invention also relates to a battery separator formed by such microporous membrane, and a battery comprising such a separator. Another aspect of the invention relates to a method for making the multi-layer, microporous polyolefin membrane, a method for making a battery using such a membrane as a separator, and a method for using such a battery.Type: GrantFiled: November 17, 2008Date of Patent: September 29, 2015Assignee: Toray Battery Separator Film Co., Ltd.Inventors: Takeshi Ishihara, Kohtaro Kimishima
-
Patent number: 9147876Abstract: A predoping technique considered as highly practicable is an electrochemical method in which predoping is performed by assembling a battery such that an active material (electrode) and lithium are brought into direct contact with each other or short-circuited therebetween via an electric circuit, and by filling an electrolytic solution in the battery. However, in this case, much time is required, and there are problems such as the handling and the thickness accuracy of an extremely thin lithium metal foil that is not greater than 30 ?m thick. By mixing a lithium-dopable material and lithium metal together in the presence of a solvent, such problems can be solved.Type: GrantFiled: February 11, 2013Date of Patent: September 29, 2015Assignee: KRI, Inc.Inventors: Hisashi Satake, Masanori Fujii, Hajime Kinoshita, Shizukuni Yata
-
Patent number: 9123958Abstract: Disclosed is a cathode active material for secondary batteries, comprising at least one compound selected from the following Formula 1: xLi2MO3*yLiM?O2*zLi3PO4 (1) wherein M is at least one element selected from 1 period or 2 period metals having an oxidation number of +4; M? is at least one element selected from 1 period or 2 period metals having a mean oxidation number of +3; and 0.1?x?0.9, 0.1?y?0.9, 0<z?0.2 and x+y+z=1.Type: GrantFiled: October 18, 2012Date of Patent: September 1, 2015Assignee: LG CHEM, LTD.Inventors: Sung-Kyun Chang, Hyelim Jeon, Hong Kyu Park, Sang Uck Lee, Cheol-Hee Park
-
Patent number: 9112213Abstract: An active material for a secondary battery, a secondary battery including the active material, and a method of preparing an active material, the active material including a silicon-based core; and an aluminum-based coating layer on at least a part of the silicon-based core.Type: GrantFiled: February 21, 2013Date of Patent: August 18, 2015Assignee: SAMSUNG SDI CO., LTD.Inventors: Byung-Joo Chung, Eon-Mi Lee, Woo-Cheol Shin, Tae-Sik Kim, Jong-Ki Lee
-
Patent number: 9112226Abstract: An anode material for ultrafast-charging lithium ion batteries, the anode material comprising C—Li4Ti5O12. A method of synthesizing an anode material for ultrafast-charging lithium ion batteries, the method comprising the steps of: adding lithium to an organic alcohol to form a first solution; adding titanium via an organic titanium source to the first solution to form a second solution; adding water to the second solution to form a diluted second solution; heating the diluted second solution at a temperature ranging from about 80° C. to about 180° C. to obtain solid Li4Ti5O12; and annealing the solid Li4Ti5O12 in the absence of air to obtain the anode material comprising C—Li4Ti5O12.Type: GrantFiled: January 31, 2013Date of Patent: August 18, 2015Assignee: Nanyang Technological UniversityInventors: Xuewei Liu, Jiehua Liu
-
Patent number: 9105924Abstract: Provided is a positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an ?-NaFeO2-type crystal structure and represented by the composition formula of Li1+?Me1??O2 (Me is a transition metal including Co, Ni and Mn and ?>0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less.Type: GrantFiled: June 11, 2013Date of Patent: August 11, 2015Assignee: GS YUASA INTERNATIONAL LTD.Inventors: Daisuke Endo, Hiromasa Muramatsu
-
Patent number: 9085491Abstract: A carbon-containing lithium titanium oxide containing spherical particle aggregate with a diameter of 1-80 ?m, consisting of lithium titanium oxide primary particles coated with carbon. Also, a method for the production of such a carbon-containing lithium titanium oxide as well as an electrode containing such a carbon-containing lithium titanium oxide as active material as well as a lithium-ion secondary battery containing an above-described electrode.Type: GrantFiled: February 28, 2014Date of Patent: July 21, 2015Assignee: Sued-Chemie IP GmbH & Co. KGInventors: Jasmin Dollinger, Andreas Pollner, Michael Holzapfel, Nicolas Tran, Norbert Schall, Max Eisgruber
-
Patent number: 9083059Abstract: A secondary battery capable of improving cycle characteristics is provided. The secondary battery includes a cathode 21, an anode 22, and an electrolytic solution. A separator 23 provided between the cathode 21 and the anode 22 is impregnated with the electrolytic solution. The electrolytic solution contains a solvent and an electrolyte salt. The solvent contains a cyclic compound having a disulfonic acid anhydride group (—S(?O)2—O—S(?O)2—) and succinonitrile. Compared to a case that the solvent does not contain both the cyclic compound having the disulfonic acid anhydride group and succinonitrile or a case that that the solvent contains at least one thereof, chemical stability of the electrolytic solution is improved. Thus, even if charge and discharge are repeated, electrolytic solution decomposition is inhibited.Type: GrantFiled: March 18, 2010Date of Patent: July 14, 2015Assignee: SONY CORPORATIONInventors: Yuko Hayakawa, Tadahiko Kubota, Masayuki Ihara
-
Patent number: 9083022Abstract: Provided is an electrode active material comprising a nickel-based lithium transition metal oxide (LiMO2) wherein the nickel-based lithium transition metal oxide contains nickel (Ni) and at least one transition metal selected from the group consisting of manganese (Mn) and cobalt (Co), wherein the content of nickel is 50% or higher, based on the total weight of transition metals, and has a layered crystal structure and an average primary diameter of 3 ?m or higher, wherein the amount of Ni2+ taking the lithium site in the layered crystal structure is 5.0 atom % or less.Type: GrantFiled: August 15, 2014Date of Patent: July 14, 2015Assignee: LG CHEM, LTD.Inventors: Sinyoung Park, Sung kyun Chang, Hong-Kyu Park, Seung Tae Hong, Youngsun Choi
-
Patent number: 9077022Abstract: A lithium-ion battery includes a positive electrode, a negative electrode, and a battery case. The positive electrode includes a positive current collector, a first material of the form Li1?xMO2, where M is a metal, and a second material including carbon. The negative electrode includes a negative current collector, a third material including a lithium titanate material, and a fourth material including carbon. The battery case includes titanium and at least partially surrounds the positive and negative electrodes.Type: GrantFiled: December 6, 2010Date of Patent: July 7, 2015Assignee: MEDTRONIC, INC.Inventors: William G. Howard, Craig L. Schmidt, Erik R. Scott
-
Patent number: 9070489Abstract: Mixed phase complex lithium metal oxides are described with an overall stoichiometry represented by a formula Li1+aNibCocMndOx, ?0.05?a?0.14, 0.1?b?0.25, 0?c?0.2, 0.45?d?0.8, a+b+c+d=1 and (1+a)/(b+c+d)?1.325. The compositions are generally very high in manganese content. The compositions can have x-ray diffractograms and differential capacity profiles suggesting the presence of a layered (Li2MnO3)—layered (LiMetalO2)—spinel crystal structure. The compositions can exhibit surprisingly low first cycle irreversible capacity losses while maintaining high specific discharge capacities, even at high discharge rates. Stabilizing coatings have been found to further significantly improve performance.Type: GrantFiled: January 23, 2013Date of Patent: June 30, 2015Assignee: Envia Systems, Inc.Inventors: Sanjeev Sharma, Subramanian Venkatachalam, Yogesh Kumar Anguchamy, Herman A. Lopez, Sujeet Kumar
-
Patent number: 9065132Abstract: Compositions, and methods of obtaining them, useful for lithium ion batteries comprising discrete oxidized carbon nanotubes having attached to their surface lithium ion active materials in the form of nanometer sized crystals or layers. The composition can further comprise graphene or oxygenated graphene.Type: GrantFiled: March 3, 2015Date of Patent: June 23, 2015Assignee: Molecular Rebar Design, LLCInventors: Clive P. Bosnyak, Kurt W. Swogger
-
Patent number: 9051190Abstract: The present invention relates to the use of an oxyhydroxy salt related to the family of layered double hydroxides for the design and manufacture of an electrode with a view to storing electrical energy.Type: GrantFiled: July 28, 2009Date of Patent: June 9, 2015Assignee: UNIVERSITE HENRI POINCARE NANCY 1Inventors: Jean-Marie Genin, Christian Ruby
-
Patent number: 9054375Abstract: A rechargeable lithium battery includes a positive electrode including a current collector, a positive active material layer on the current collector and including a lithium manganese-based positive active material, and a protective layer on the positive active material layer and including a phosphite-based compound; a negative electrode; and an electrolyte coupled with the positive electrode and the negative electrode and including a lithium salt, a non-aqueous solvent, and an additive.Type: GrantFiled: July 20, 2010Date of Patent: June 9, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Nam-Soon Choi, Sae-Weon Roh, Man-Seok Han, Sung-Soo Kim
-
Publication number: 20150147655Abstract: Provided are lithium transition metal composite particle including a lithium transition metal oxide particle, a metal-doped layer formed by doping the lithium transition metal oxide particle, and LiF formed on the lithium transition metal oxide particle including the metal-doped layer, a preparation method thereof, and a lithium secondary battery including the lithium transition metal composite particles.Type: ApplicationFiled: November 25, 2014Publication date: May 28, 2015Applicant: LG CHEM, LTD.Inventors: Sung Bin Park, Ji Hye Kim, Wang Mo Jung, Sang Seung Oh, Byung Chun Park
-
Publication number: 20150140431Abstract: A method for producing a positive electrode active material for nonaqueous secondary batteries, the positive electrode active material using a polyanionic active material. The method includes the steps of mixing raw materials of the positive electrode active material with each other, pre-calcining the mixed raw materials in an oxidizing atmosphere at a temperature ranging from 400 to 600° C. both inclusive, mixing carbon or an organic substance with a pre-calcinated material yielded through the pre-calcining step, and the step of calcining the pre-calcinated material, with which the carbon or the organic substance is mixed in a reducing atmosphere or an inert atmosphere.Type: ApplicationFiled: March 15, 2013Publication date: May 21, 2015Inventors: Kan Kitagawa, Toyotaka Yuasa
-
Publication number: 20150140432Abstract: To provide an electric storage device that has excellent charging characteristics, particularly at a low temperature. Provided is a nonaqueous solvent-based electric storage device containing as positive electrode active materials, at least one of a lithium nickel aluminum complex oxides and a spinel-type lithium manganese oxide active material having LiMn2O4 as a basic structure, and lithium vanadium phosphate.Type: ApplicationFiled: April 8, 2013Publication date: May 21, 2015Inventors: Hideo Yanagita, Kazuki Takimoto
-
Publication number: 20150140433Abstract: A battery active material of the present embodiment includes a first active material and a second active material. The first active material contains a neutral or acidic active material substrate formed of a titanium oxide or a titanate compound, and an inorganic compound layer covering a surface of the active material substrate. The second active material is basic and is formed of a titanium oxide or a titanate compound. The first active material and/or the second active material are covered with a carbon coating layer.Type: ApplicationFiled: November 19, 2014Publication date: May 21, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Kazuhiro YASUDA, Takuya IWASAKI, Mitsuru ISHIBASHI, Yorikazu YOSHIDA, Keigo HOSHINA
-
Patent number: 9034520Abstract: Disclosed is a positive active material for a lithium secondary battery. The positive active material includes a lithium molybdenum oxide having an X-ray diffraction (XRD) pattern with peaks at 11.5±2°, 21±2°, 38±2°, and 64±2° 2-theta (2?) and represented by Formula 1: LixMoO3, where 1<x?3. Also disclosed is a method of preparing the positive active material.Type: GrantFiled: April 25, 2011Date of Patent: May 19, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Young-Ki Kim, Young-Hun Lee, Soon-Rewl Lee, Jay-Hyok Song, Ick-Kyu Choi, Yong-Chul Park, Yoon-Chang Kim
-
Publication number: 20150132640Abstract: The present disclosure provides a phosphate framework electrode material for sodium ion battery and a method for synthesizing such electrode material. A surfactant and precursors including a sodium precursor, a phosphate precursor, a transition metal precursor are dissolved in a solvent and stirred for sufficient mixing and reaction. The precursors are reacted to yield a precipitate of particles of NaxAbMy(PO4)zXn compound and with the surfactant attached to the particles. The solvent is then removed and the remaining precipitate is sintered to crystallize the particles. During sintering, the surfactant is decomposed to form a carbon network between the crystallized particles and the crystallized particles and the carbon matrix are integrated to form the electrode material.Type: ApplicationFiled: April 23, 2013Publication date: May 14, 2015Inventors: Palani Balaya, Saravanan Kuppan, Bing Liu, Chad William Mason
-
Publication number: 20150132666Abstract: There is provided a positive electrode for a nonaqueous electrolyte secondary battery, the positive electrode being capable of improving the charge-discharge cycle characteristics of the nonaqueous electrolyte secondary battery. A positive electrode 12 of a nonaqueous electrolyte secondary battery 1 contains positive electrode active material particles. The positive electrode active material particles contain a lithium-containing transition metal oxide. The lithium-containing transition metal oxide has a crystal structure that belongs to the space group P63mc. A compound of at least one selected from the group consisting of boron, zirconium, aluminum, magnesium, titanium, and a rare-earth element is attached to surfaces of the positive electrode active material particles.Type: ApplicationFiled: December 28, 2012Publication date: May 14, 2015Applicant: SANYO ELECTRIC CO., LTD.Inventors: Atsushi Ogata, Takeshi Ogasawara, Yasufumi Takahashi, Motoharu Saito, Masaki Hirase, Katsunori Yanagida, Masahisa Fujimoto
-
Publication number: 20150132651Abstract: Provided is a cathode active material including a complex coating layer, which includes M below, formed on a surface of the cathode active material through reaction of a lithium transition metal oxide represented by Formula 1 below with a coating precursor: LixMO2??(1) wherein M is represented by MnaM?1-b, M? is at least one selected from the group consisting of Al, Mg, Ni, Co, Cr, V, Fe, Cu, Zn, Ti and B, 0.95?x?1.5, and 0.5?a?1. The lithium secondary battery including the cathode active material exhibits improved lifespan and rate characteristics due to superior stability.Type: ApplicationFiled: January 15, 2015Publication date: May 14, 2015Applicant: LG CHEM, LTD.Inventors: Bo Ram Lee, Hye Lim Jeon, Sun Sik Shin, Sangwook Lee, Wang Mo Jung
-
Publication number: 20150132660Abstract: The present invention concerns electrode materials capable of redox reactions by electron and alkali-ion exchange with an electrolyte. The applications are in the field of primary (batteries) or secondary electrochemical generators, supercapacitors and light modulating systems of the electrochromic type.Type: ApplicationFiled: January 22, 2015Publication date: May 14, 2015Inventors: Nathalie Ravet, Simon Besner, Martin Simoneau, Alain Vallee, Michel Armand, Jean-Francois Magnan, Karim Zaghib
-
Publication number: 20150132642Abstract: Lithium-containing nanofibers, as well as processes for making the same, are disclosed herein. In some embodiments described herein, using high throughput (e.g., gas assisted and/or water based) electrospinning processes produce nanofibers of high energy capacity materials with continuous lithium-containing matrices or discrete crystal domains.Type: ApplicationFiled: February 28, 2013Publication date: May 14, 2015Applicant: CORNELL UNIVERSITYInventors: Yong Lak Joo, Nathaniel S. Hansen, Daehwan Cho, Kyoung Woo Kim
-
Patent number: 9029026Abstract: A battery (10) is disclosed having a negative or anodic half cell (12) and a cathodic or positive half cell (13). The positive and negative half cells are encased within a fabric within a non-conductive housing (14). The housing includes holes (18) which allow the passage of ambient air. The anodic material (20) is preferably a transition metal bronze such as Na0.9W0.75Ti0.25O3. The positive half cell is made of a cathodic material (25) in the form of powder which is encased a fabric (26). The cathodic material is preferably Na0.9W0.75P0.25O3.325. The battery also includes an electrical conductor (31) in electrical contact with the positive half cell and the negative half cell. The electrical conductor includes a switch (35) which may be opened and closed to couple the half cells together to produce an electric current through a load (36).Type: GrantFiled: March 6, 2012Date of Patent: May 12, 2015Assignee: Omega Energy Systems, LLCInventor: Michael Lee Horovitz
-
Patent number: 9023525Abstract: Disclosed is a lithium secondary battery, which is low in capacity loss after overdischarge, having excellent capacity restorability after overdischarge and shows an effect of preventing a battery from swelling at a high temperature.Type: GrantFiled: September 11, 2009Date of Patent: May 5, 2015Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Seung Tae Hong, Hyeong Jin Kim, Duk Hyun Ryu, Eun Young Goh, Ho Chun Lee, Jun Yong Jeong, Jin Hee Yeon, Hyung Keun Lee
-
Patent number: 9023526Abstract: A positive active material for a rechargeable lithium battery includes pores having an average diameter of about 10 nm to about 60 nm and a porosity of about 0.5% to about 20%. Also disclosed is a method of preparing the positive active material, and a rechargeable lithium battery including the positive active material.Type: GrantFiled: May 31, 2011Date of Patent: May 5, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Yu-Mi Song, Do-Hyung Park, Seon-Young Kwon, Min-Han Kim, Ji-Hyun Kim, Kyoung-Hyun Kim
-
Publication number: 20150118563Abstract: The present invention discloses a lithium-rich positive electrode material, a lithium battery positive electrode, and a lithium battery. The lithium-rich positive electrode material has a coating structure, where a general structural formula of a core of the coating structure is as follows: z[xLi2MO3·(1?x)LiMeO2]·(1?z)Li1+dMy2?dO, where in the formula, 0<x<1, 0<z<1, and 0<d<?; M is at least one of Mn, Ti, Zr, and Cr, Me is at least one of Mn, Co, Ni, Ti, Cr, V, Fe, Al, Mg, and Zr, and My is at least one of Mn, Ni, and Co; and a coating layer of the coating structure is a compound whose general formula is MmMz, where in the formula, Mm is at least one of Zn, Ti, Zr, and Al, and Mz is O or F. The lithium battery positive electrode and the lithium battery both include the lithium-rich positive electrode material.Type: ApplicationFiled: December 31, 2014Publication date: April 30, 2015Inventor: Chaohui Chen
-
Publication number: 20150118565Abstract: A novel lithium battery cathode, a lithium ion battery using the same and processes and preparation thereof are disclosed. The battery cathode is formed by force spinning. Fiber spinning allows for the formation of core-shell materials using material chemistries that would be incompatible with prior spinning techniques. A fiber spinning apparatus for forming a coated fiber and a method of forming a coated fiber are also disclosed.Type: ApplicationFiled: May 7, 2012Publication date: April 30, 2015Applicant: The Board of Regents, The University of Texas SystemInventors: Nelson S. Bell, Nancy A. Missert, Karen Lozano, Yatinkumar N. Rane
-
Publication number: 20150115896Abstract: A power storage device includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode comprises a plurality of types of negative electrode active materials, wherein each of the plurality of types has different lithium-ion absorption potentials.Type: ApplicationFiled: October 20, 2014Publication date: April 30, 2015Inventors: Takeshi Shimomura, Touru Sumiya, Shigeki Kihara, Masao Suzuki, Masatoshi Ono
-
Patent number: 9017872Abstract: A lithium titanate composite material includes lithium titanate particles and an AlPO4/C composite layer disposed on a surface of the lithium titanate particles. The AlPO4/C composite layer includes aluminum phosphate and carbon. The lithium titanate composite material, as an anode active material, can be applied to a lithium ion battery to increase its electrochemical stability.Type: GrantFiled: May 3, 2011Date of Patent: April 28, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xian-Kun Huang, Xiang-Ming He, Chang-Yin Jiang, Dan Wang, Jian Gao, Jian-Jun Li
-
Patent number: 9017873Abstract: A lithium titanate composite material includes a lithium titanate particle and a double layered structure coated on a surface of the lithium titanate particle. The double layered structure includes a carbon layer directly disposed on the surface of the lithium titanate particle, and an AlPO4 layer disposed on an outer surface of the carbon layer. The lithium titanate composite material, as an anode active material, can be applied to a lithium ion battery to increase its electrochemical stability.Type: GrantFiled: May 3, 2011Date of Patent: April 28, 2015Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xian-Kun Huang, Xiang-Ming He, Chang-Yin Jiang, Dan Wang, Jian Gao, Jian-Jun Li
-
Publication number: 20150111097Abstract: A cathode active material including a composite transition metal oxide including: sodium; a first transition metal; and a second transition metal, wherein the composite transition metal oxide has a first diffraction peak corresponding to a Miller index of (003) and derived from a layered rock salt structure, and a second diffraction peak corresponding to a Miller index of (104) and derived from a cubic rock salt structure in an X-ray powder diffraction (XRD) pattern, wherein an intensity ratio (I1/I2) of the first diffraction peak to the second diffraction peak is about 7 or greater.Type: ApplicationFiled: October 21, 2014Publication date: April 23, 2015Inventors: Kwang-jin PARK, Dong-wook HAN, Hyun-jin KIM, Seok-soo LEE, Won-seok CHANG
-
Publication number: 20150111104Abstract: A method is described for manufacturing a lithium-sulfur cell or lithium-sulfur battery, in particular a solid-state lithium-sulfur cell or lithium-sulfur battery. A nanowire network is provided in a method step a) composed of an electron- and lithium ion-conducting ceramic mixed conductor or a mixed conductor precursor for forming an electron- and lithium ion-conducting ceramic mixed conductor. The nanowire network is coated with a lithium ion-conducting solid-state electrolyte layer in a method step b). The nanowire network is optionally infiltrated with sulfur in a method step c). A cathode current arrester is applied to the uncoated side of the nanowire network in a method step d). Moreover, a lithium-sulfur cell, a lithium-sulfur battery, and a mobile or stationary system are described as well.Type: ApplicationFiled: March 5, 2013Publication date: April 23, 2015Applicant: Robert Bosch GmbHInventors: Christine Engel, Ulrich Eisele, Andre Moc
-
Patent number: 9005813Abstract: A negative electrode active material, a method of preparing the negative electrode active material and a lithium secondary battery including the negative electrode active material are disclosed. A negative electrode active material includes a lithium titanate, wherein a portion of lithium of the lithium titanate is substituted by at least one selected from the group consisting of Sr, Ba, a mixture thereof and an alloy thereof, and thus a lithium secondary battery including the negative electrode active material may improve high-rate discharge characteristics.Type: GrantFiled: February 2, 2012Date of Patent: April 14, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Jong-Hee Lee, Yong-Mi Yu, Joa-Young Jeong, Jae-Myung Kim
-
Publication number: 20150099160Abstract: According to one embodiment, a negative electrode active material for nonaqueous electrolyte battery includes a titanium oxide compound having a crystal structure of monoclinic titanium dioxide. When a monoclinic titanium dioxide is used as the active material, the effective capacity is significantly lower than the theoretical capacity though the theoretical capacity was about 330 mAh/g. The invention comprises a titanium oxide compound which has a crystal structure of monoclinic titanium dioxide and a (001) plane spacing of 6.22 ? or more in the powder X-ray diffraction method using a Cu-K? radiation source, thereby making an attempt to improve effective capacity.Type: ApplicationFiled: December 16, 2014Publication date: April 9, 2015Inventors: Yasuhiro HARADA, Norio TAKAMI, Hiroki INAGAKI, Keigo HOSHINA
-
Publication number: 20150099177Abstract: A nonaqueous electrolyte secondary battery disclosed in the present application includes: a positive electrode capable of absorbing and releasing lithium, containing a positive electrode active material composed of a lithium-containing transition metal oxide having a layered crystalline structure; and a negative electrode capable of absorbing and releasing lithium, containing a negative electrode active material composed of a lithium-containing transition metal oxide obtained by substituting some of Ti element of a lithium-containing titanium oxide having a spinel crystalline structure with one or more element different from Ti, wherein a retention of the negative electrode is set to be greater than a retention of the positive electrode, and an irreversible capacity rate of the negative electrode is set to be greater than an irreversible capacity rate of the positive electrode, whereby a discharge ends by negative electrode limitation.Type: ApplicationFiled: October 23, 2014Publication date: April 9, 2015Inventors: Natsumi GOTO, Takashi TAKEUCHI, Masaki HASEGAWA
-
Patent number: 8999579Abstract: An anode includes a collector; and an anode active material layer disposed on the collector comprises an anode active material, which is lithium oxide coated Li4Ti5O12, a conductive material, and a binder, wherein the lithium oxide intercalates and/or deintercalates lithium ions into and from the lattice structure of Li4Ti5O12. By coating the surface of the anode active material with lithium oxide, an anode including the surface-treated anode active material has a high capacity, high-rate properties, and a high initial efficiency.Type: GrantFiled: October 21, 2008Date of Patent: April 7, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Joung-won Park, Yoon-sok Kang, Han-su Kim, Jae-gu Yoon, Gue-sung Kim
-
Publication number: 20150093646Abstract: A positive-electrode active material for a non-aqueous electrolyte secondary battery according to the present disclosure contains a layered lithium(Li)-containing transition metal composite oxide that contains Li in the transition metal layer and more than 0.4 ?mol/g and less than 25 ?mol/g of iodine (I) or bromine (Br).Type: ApplicationFiled: September 18, 2014Publication date: April 2, 2015Inventor: HIROSHI KAWADA
-
Patent number: 8993167Abstract: Provided is a cathode active material composed of lithium nickel oxide represented by Formula 1, wherein the lithium nickel oxide contains nickel in an amount of 40% or higher, based on the total weight of transition metals, and the cathode active material comprises a first coating layer provided on the surface thereof and a second coating layer provided on the surface of the first coating layer, wherein the first coating layer is composed of a non-reactive material selected from the group consisting of oxides, nitrides, sulfides and mixtures or complexes thereof and the second coating layer is composed of a carbon-based material.Type: GrantFiled: August 6, 2010Date of Patent: March 31, 2015Assignee: LG Chem, Ltd.Inventors: Sung kyun Chang, Hong-Kyu Park, Sinyoung Park
-
Publication number: 20150086839Abstract: According to one embodiment, there is provided an active substance. The active substance includes secondary particles and a carbon material phase formed on at least a part of a surface of each of the secondary particles. Each of the secondary particles is constructed by aggregated primary particles of an active material. The primary particles of the active material includes a niobium composite oxide represented by LixM(1-y)NbyNb2O(7+?), wherein M is at least one selected from the group consisting of Ti and Zr, and x, y, and ? respectively satisfy 0?x?6, 0?y?1, and ?1???1. The secondary particles have a compression fracture strength of 10 MPa or more.Type: ApplicationFiled: September 22, 2014Publication date: March 26, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Hiroki INAGAKI, Yasuhiro HARADA, Yorikazu YOSHIDA, Kazuki ISE, Norio TAKAMI
-
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
-
Patent number: 8986886Abstract: A positive active material, a method of preparing the same, and a lithium battery including the same.Type: GrantFiled: May 25, 2011Date of Patent: March 24, 2015Assignee: Samsung SDI Co., LtdInventors: Do-Hyung Park, Chang-Hyuk Kim, Ji-Hyun Kim, Jeong-Seop Lee, Min-Han Kim, Seon-Young Kwon, Yoon-Chang Kim
-
Patent number: 8986885Abstract: An object of the present invention is to provide a lithium ion battery which is excellent in properties at large current and can be applied to applications requiring high output power even when the mixture layers are made thick. The present invention provides a lithium ion battery including a positive electrode including a positive electrode mixture layer formed on a current collector, a negative electrode including a negative electrode mixture layer formed on a current collector and an electrolyte, the positive electrode and the negative electrode being disposed through the intermediary of a separator, wherein the positive electrode includes as a positive electrode active material a lithium composite oxide represented by LiNiaMnbCOcMdO2 (in the formula, M is at least one selected from the group consisting of Fe, V, Ti, Cu, Al, Sn, Zn, Mg, B and W, a+b+c+d=1, 0.2?a?0.8, 0.1?b?0.4, 0?c?0.4 and 0?d?0.Type: GrantFiled: February 16, 2011Date of Patent: March 24, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Akihide Tanaka, Etsuko Nishimura
-
Patent number: 8986884Abstract: A lithium-ion secondary battery comprising a positive electrode and a negative electrode is provided. The positive electrode comprises as a positive electrode active material a lithium transition metal composite oxide having a layered structure. The composite oxide contains as its metal components at least one species of Ni, Co and Mn as well as W and Ca. The composite oxide contains 0.26 mol % or more, but 5 mol % or less of W and Ca combined when all the metal elements contained in the oxide excluding lithium account for a total of 100 mol %, with the ratio (mW/mCa) of the number of moles of W contained, mW, to the number of moles of Ca contained, mCa, being 2.0 or larger, but 50 or smaller.Type: GrantFiled: September 17, 2010Date of Patent: March 24, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hiroki Nagai
-
Patent number: 8986570Abstract: The present invention discloses a method for producing a positive electrode active material for a lithium secondary battery constituted by a lithium-nickel-cobalt-manganese complex oxide with a lamellar structure, the method including: (1) a step of preparing a starting source material for producing the complex oxide including a lithium supply source, a nickel supply source, a cobalt supply source, and a manganese supply source; (2) a step of pre-firing the starting source material by heating at a pre-firing temperature that has been set to a temperature lower than 800° C. and higher than a melting temperature of the lithium supply source; and (3) a step of firing the pre-fired material obtained in the pre-firing step by raising a temperature to a temperature range higher than the pre-firing temperature.Type: GrantFiled: December 14, 2009Date of Patent: March 24, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Nagai, Hidekazu Hiratsuka
-
Publication number: 20150079470Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes a positive current collector and a positive electrode material layer formed on the positive electrode current collector. The positive electrode material layer includes a positive electrode active material and a first conductive agent. In a mapping image for the positive electrode material layer, a ratio of an occupancy area of the first conductive agent to an occupancy area of the positive electrode active material is from 1.5 to 5.Type: ApplicationFiled: September 5, 2014Publication date: March 19, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Tetsuro KANO, Hikaru YOSHIKAWA, Hidesato SARUWATARI, Kazuya KURIYAMA