Having Utility As A Reactive Material In An Electrochemical Cell; E.g., Battery, Etc. Patents (Class 252/182.1)
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Publication number: 20150010823Abstract: In an aspect, a positive active material for a rechargeable lithium battery including overlithiated layered oxide (OLO), a method of preparing the same, and a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same is disclosed.Type: ApplicationFiled: June 10, 2014Publication date: January 8, 2015Inventors: Byong-Yong Yu, Jay-Hyok Song, Jun-Seok Park, Andrei Kapylou, Chang-Wook Kim, Yong-Chan You, Sun-Ho Kang
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Patent number: 8926860Abstract: The present invention relates to a cathode active material with whole particle concentration gradient for a lithium secondary battery, a method for preparing same, and a lithium secondary battery having same, and more specifically, to a composite cathode active material, a method for manufacturing same, and a lithium secondary battery having same, the composite cathode active material having excellent lifetime characteristics and charge/discharge characteristics through the stabilization of crystal structure as the concentration of a metal comprising the cathode active material shows concentration gradient in the whole particle, and having thermostability even in high temperatures.Type: GrantFiled: December 27, 2011Date of Patent: January 6, 2015Assignee: Industry-University Cooperation Foundation Hanyang UniversityInventors: Yang-Kook Sun, Hyung Joo Noh
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Patent number: 8927152Abstract: Provided is a binder for an electrode of a lithium rechargeable battery including a copolymer of Chemical Formula 1, which increases adhesion between the electrode and an active material by employing a copolymer based on polyacrylamide, while having excellent heat resistance and mechanical strength, an electrode for a rechargeable battery including the same, and a rechargeable battery including the electrode. The binder and electrode can improve charge and discharge cycle life characteristics of the rechargeable battery.Type: GrantFiled: March 13, 2013Date of Patent: January 6, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Byungjoo Chung, Namseon Kim, Yangsoo Kim, Kwangshik Choi
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Publication number: 20150001442Abstract: Provided is a method for synthesizing air electrode powder, which uses instead of an organic solvent lanthanum-nitrate, strontium-nitrate, cobalt-nitrate, and iron-nitrate, which are affordable and can undergo water-based synthesis, by controlling additional mol ratio and a synthesis temperature of a chelate agent and an esterification reaction accelerating agent instead of complex process controlling conditions, such as a hydrolysis condition and pH in order to control particle shape.Type: ApplicationFiled: October 9, 2012Publication date: January 1, 2015Applicant: Korea Institute of Industrial TechnologyInventors: Ho Sung Kim, Ju Hee Kang, Hyo Sin Kim, Jin Hun Jo, Yeong Mok Kim, Sang Hun Heo, Ik Hyun Oh
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Publication number: 20150004486Abstract: It is possible to form a secondary cell having excellent charge-discharge cycle properties and to improve dispersibility of the active substance and the auxiliary conductor and pliability and close adhesion of the electrodes by using a composition for forming a secondary cell electrode that comprises at least one of an electrode active substance (A) and a carbon material (B) that serves as an auxiliary conductor, a water-soluble additive (C) that is a water-soluble additive formed from carbon atoms, oxygen atoms, and hydrogen atoms and that has 2 to 20 oxygen atoms per 1 molecule, and water (D).Type: ApplicationFiled: February 1, 2013Publication date: January 1, 2015Inventors: Yasuyuki Moroishi, Issey Haruta, Akihiko Hatemata
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Publication number: 20150004489Abstract: A method of preparing a positive active material for a lithium secondary battery represented by the following Chemical Formula 1 (LiwNixCoyMn1-x-y-zMzO2) includes: (a) preparing a metal salt aqueous solution including a lithium raw material, a manganese raw material, a nickel raw material, and a cobalt raw material; (b) wet-pulverizing the metal salt aqueous solution using beads having a particle diameter of 0.05 to 0.30 mm at 2000 to 6000 rpm for 2 to 12 hours to prepare a slurry; (c) adding a carbon source to the slurry; (d) spray-drying the slurry of the step (c) to prepare a mixed powder; and (e) heat-treating the mixed powder.Type: ApplicationFiled: September 21, 2012Publication date: January 1, 2015Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Jun Ho Song, Young Jun Kim, Jae-Hun Kim, Kyoung Joon Lee, Min-Woo Lee
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Publication number: 20150004491Abstract: The present invention provides a positive-electrode active material for non-aqueous secondary battery comprising a sodium transition metal composite oxide represented by Formula: NaxFe1-yMyO2, wherein 0.4?x?0.7, 0.25?y<1.0, and M is at least one element selected from the group consisting of manganese, cobalt and nickel, the sodium transition metal composite oxide having a crystal structure substantially composed of P63/mmc alone.Type: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Inventors: Hideaki YOSHIWARA, Tsutomu YAMADA, Masahiro MURAYAMA
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Patent number: 8920683Abstract: A sputtering target which is composed of a sintered body of an oxide which contains at least indium, tin, and zinc and includes a spinel structure compound of Zn2SnO4 and a bixbyite structure compound of In2O3. A sputtering target includes indium, tin, zinc, and oxygen with only a peak ascribed to a bixbyite structure compound being substantially observed by X-ray diffraction (XRD).Type: GrantFiled: December 13, 2012Date of Patent: December 30, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Koki Yano, Kazuyoshi Inoue, Nobuo Tanaka, Akira Kaijo, Satoshi Umeno
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Patent number: 8920765Abstract: A graphite material suitable as an electrode material for non-aqueous electrolytic secondary batteries; a method for producing the same and a carbon material for battery electrodes; and a secondary battery. The graphite material includes crystallite graphite particles wherein an oxygen amount (a) (mass %) in a region from a particle surface of the graphite material to a depth of 40 nm is within a range of 0.010?(a)?0.04 as determined by a peak intensity of O1s obtained by HAX-PES measurement using a hard X-ray of 7,940 eV.Type: GrantFiled: October 5, 2012Date of Patent: December 30, 2014Assignee: Showa Denko K.K.Inventors: Akinori Sudoh, Yuuichi Kamijou, Masako Tanaka, Tomohiro Abe
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Patent number: 8920976Abstract: 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: GrantFiled: April 18, 2012Date of Patent: December 30, 2014Assignee: Panasonic CorporationInventors: Natsumi Goto, Takashi Takeuchi, Masaki Hasegawa
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Patent number: 8920687Abstract: Provided is a cathode active material for nonaqueous electrolyte rechargeable batteries which allows production of batteries having improved load characteristics with stable quality, and also allows production of batteries having high capacity. Also provided are a cathode for nonaqueous electrolyte rechargeable batteries and a nonaqueous electrolyte rechargeable battery. The cathode active material includes secondary particles each composed of a plurality of primary particles, and/or single crystal grains, and has a specific surface area of not smaller than 20 m2/g and smaller than 0.50 m2/g, wherein average number A represented by formula (1) is not less than 1 and not more than 10: A=(m+p)/(m+s) (m: the number of single crystal grains; p: the number of primary particles composing the secondary particles; s: the number of secondary particles).Type: GrantFiled: December 26, 2007Date of Patent: December 30, 2014Assignee: Santoku CorporationInventors: Tetsu Fujiwara, Masayuki Moritaka, Akihito Kaneko
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Patent number: 8920672Abstract: The present invention relates to negative active materials for rechargeable lithium batteries, manufacturing methods thereof, and rechargeable lithium batteries including the negative active materials. A negative active material for a rechargeable lithium battery includes a core including a material capable of carrying out reversible oxidation and reduction reactions and a coating layer formed on the core. The coating layer has a reticular structure.Type: GrantFiled: January 10, 2012Date of Patent: December 30, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Nam-Soon Choi, Sung-Soo Kim, Yong-Mook Kang, Kyoung-Han Yew
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Publication number: 20140377655Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.Type: ApplicationFiled: April 25, 2014Publication date: December 25, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Jun-young MUN, Jae-myung LEE, Gue-sung KIM, Yoon-sok KANG, Myung-hoon KIM, Jun-ho PARK, Jin-hwan PARK, Jae-gu YOON, Byung-jin CHOI
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Publication number: 20140374652Abstract: A hydrogen storage alloy material includes a primary phase having an ABx type structure and a secondary phase having a B2 structure that enhances the electrochemical properties of the alloy. The A component of the primary phase includes La and Ce, and the B component of the primary phase includes Ni, Co, Al, and Mn. The secondary phase may include Al, Mn, and Ni. Also disclosed are battery systems including the alloy material.Type: ApplicationFiled: June 25, 2013Publication date: December 25, 2014Applicant: Ovonic Battery Company, Inc.Inventors: Kwo-hsiung Young, Benjamin Chao
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Publication number: 20140377653Abstract: The present invention relates to a method of preparing a porous silicon-based negative electrode active material comprising: mixing a porous silica (SiO2) and an aluminum powder; oxidizing all or part of the aluminum powder as an aluminum oxide while at the same time reducing all or part of the porous silica as a porous silicon (Si) by heat-treating a mixture of the porous silica with the aluminum powder, a negative electrode active material, and a rechargeable lithium battery including the same.Type: ApplicationFiled: June 20, 2014Publication date: December 25, 2014Inventors: Soojin PARK, Sin Ho CHOI, Ji Hyun YOON, Byoung Man BANG
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Publication number: 20140377660Abstract: Provided is a lithium composite oxide having a uniform and suitable particle size and high specific surface area due to a hollow structure that can be produced on an industrial scale. A nickel composite hydroxide as a raw material thereof is obtained controlling the particle size distribution of the nickel composite hydroxide, the nickel composite hydroxide having a structure comprising a center section that comprises minute primary particles, and an outer-shell section that exists on the outside of the center section and comprises plate shaped primary particles that are larger than the primary particles of the center section, by a nucleation process and a particle growth process that are separated by controlling the pH during crystallization, and by controlling the reaction atmosphere in each process and the manganese content in a metal compound that is supplied in each process.Type: ApplicationFiled: December 20, 2012Publication date: December 25, 2014Inventors: Atsushi Fukui, Hiroyuki Toya
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Publication number: 20140374651Abstract: A structurally and compositionally disordered electrochemically active alloy material is provided with excellent capacity and cycle life, as well as superior high-rate dischargeability. The alloy employs a disordered A2B4+x(AB5) structure, wherein x is a number between 1 and 4. This crystal structure combined with a tailored amount of electrochemically active AB5 secondary phase material produces superior electrochemical properties.Type: ApplicationFiled: June 25, 2013Publication date: December 25, 2014Applicant: Ovonic Battery Company, Inc.Inventors: Kwo-hsiung Young, Taihei Ouchi
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Publication number: 20140377662Abstract: Disclosed are compositions containing a formula of LixTiyV1Bz wherein x, y, and z are real numbers greater than zero. In certain embodiments, x is not greater than 7, and y is not greater than 6, or a combination thereof. The composition may be a microporous aerogel, a mesoporous aerogel, a crystalline structure, or a combination thereof. In certain embodiments, the composition may be an aerogel, and a surface of the aerogel comprises microcrystals, nanocrystals or a combination thereof. The compositions have very low densities. Also disclosed are methods to produce the composition and use of the composition in energy storage devices.Type: ApplicationFiled: June 19, 2014Publication date: December 25, 2014Inventor: Nilanjan DEB
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Publication number: 20140377664Abstract: An all-solid-state lithium battery, thermo-electromechanical activation of Li2S in sulfide based solid state electrolyte with transition metal sulfides, and electromechanical evolution of a bulk-type all-solid-state iron sulfur cathode, are disclosed. An example all-solid-state lithium battery includes a cathode having a transition metal sulfide mixed with elemental sulfur to increase electrical conductivity. In one example method of in-situ electomechanical synthesis of Pyrite (FeS2) from Sulfide (FeS) and elemental sulfur (S) precursors for operation of a solid-state lithium battery, FeS+S composite electrodes are cycled at moderately elevated temperatures.Type: ApplicationFiled: January 9, 2013Publication date: December 25, 2014Inventors: Thomas A. Yersak, Se-Hee Lee, Conrad Stoldt
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Patent number: 8916062Abstract: A composition for forming an electrode. The composition includes a metal fluoride, such as copper fluoride, and a matrix material. The matrix material adds capacity to the electrode. The copper fluoride compound is characterized by a first voltage range in which the copper fluoride compound is electrochemically active and the matrix material characterized by a second voltage range in which the matrix material is electrochemically active and substantially stable. A method for forming the composition is included.Type: GrantFiled: March 19, 2014Date of Patent: December 23, 2014Assignee: Wildcat Discovery Technologies, Inc.Inventors: Wei Tong, Steven Kaye, David Keogh, Cory O'Neill
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Publication number: 20140370390Abstract: Disclosed are a method for preparing a positive electrode active material for a lithium secondary battery and a positive electrode active material for a lithium secondary battery, the method including: preparing a mixture of a precursor represented by Chemical Formula 1 below, a lithium composite oxide represented by Chemical Formula 2 below and capable of intercalating/deintercalating lithium ions, and a lithium feed material; and firing the prepared mixture: A(OH)2-a??[Chemical Formula 1] Li[LizA(1-z-a)Da]EbO2-b??[Chemical Formula 2]Type: ApplicationFiled: August 29, 2014Publication date: December 18, 2014Inventors: Su An Choi, Seung Won Lee, Sang-Hoon Jeon
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Publication number: 20140370383Abstract: Disclosed is a composition comprising an ethylene copolymer and a halogenated polymer, wherein the ethylene copolymer comprises or is produced from repeat units derived from ethylene and a comonomer selected from the group consisting of an ?,?-unsaturated monocarboxylic acid or its derivative, an ?,?-unsaturated dicarboxylic acid or its derivative, an epoxide-containing monomer, a vinyl ester, or combinations of two or more thereof; and the composition can further comprise a curing agent to crosslink the ethylene copolymer. The composition is useful as a binder for a lithium ion battery.Type: ApplicationFiled: June 11, 2014Publication date: December 18, 2014Inventors: CHONGSOO LIM, Daniel P. Fore
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Publication number: 20140367609Abstract: An active material for a lithium secondary battery, a method of manufacturing the same, an electrode including the active material, and a lithium secondary battery including the electrode, the active material including a lithium composite oxide represented by the following Formula 1: Li[LixNiaCobMnc]O2-yFy.Type: ApplicationFiled: September 26, 2013Publication date: December 18, 2014Applicant: SAMSUNG SDI CO., LTD.Inventors: Andrei KAPYLOU, Jay-Hyok SONG, Evgeniya MATULEVICH, Chang-Wook KIM, Yong-Chan YOU, Sun-Ho KANG
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Publication number: 20140370187Abstract: A method is provided for synthesizing iron hexacyanoferrate (FeHCF). The method forms a first solution of a ferrocyanide source [A4Fe(CN)6.PH2O] material dissolved in a first solvent, where “A” is an alkali metal ion. A second solution is formed of a Fe(II) source dissolved in a second solvent. A reducing agent is added and, optionally, an alkali metal salt. The first and second solutions may be purged with an inert gas. The second solution is combined with the first solution to form a third solution in a low oxygen environment. The third solution is agitated in a low oxygen environment, and AX+1Fe2(CN)6.ZH2O is formed, where X is in the range of 0 to 1. The method isolates the AX+1Fe2(CN)6.ZH2O from the third solution, and dries the AX+1Fe2(CN)6.ZH2O under vacuum at a temperature greater than 60 degrees C.Type: ApplicationFiled: August 28, 2014Publication date: December 18, 2014Inventors: Sean Vail, Yuhao Lu, Jong-Jan Lee
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Publication number: 20140367610Abstract: An active material for a secondary battery with improved life characteristics is provided. An active material for a secondary battery according to this exemplary embodiment is an active material for a secondary battery represented by Lia1(Nix1Mn2-x1-y1-x1M1y1 M2z1)O4 wherein 0<x1, 0<y1, 0<z1, x1+y1+z1<2, and 0?a1?2; M1 is at least one selected from Si and Ti; and M2 is at least one selected from Li, B, Mg, Na, K, and Ca. In addition, an active material for a secondary battery according to this exemplary embodiment is an active material for a secondary battery represented by Lia2(Nix2Mn2-x2-y2-z2M3y2M4z2)O4 wherein 0<x2, 0<y2, 0<z2<0.03, x2+y2+z2<2, and 0?a2?2; M3 is at least one selected from Si and Ti; and M4 is at least one selected from Li, B, Mg, Al, Na, K, and Ca, and includes at least Al.Type: ApplicationFiled: March 29, 2012Publication date: December 18, 2014Inventors: Takehiro Noguchi, Hideaki Sasaki, Makiko Uehara
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Publication number: 20140361216Abstract: Disclosed is a cathode active material for a lithium ion secondary battery which includes a lithium manganese borate compound and a manganese oxide. The lithium manganese borate compound contains a larger amount of lithium than conventional lithium manganese borate compounds. Therefore, a larger amount of lithium is deintercalated in a battery including the cathode active material, and as a result, the specific capacity of the battery reaches 100-160 mAh/g, which is much higher than that of conventional lithium ion secondary batteries (<80 mAh/g). Also disclosed is a method for producing the cathode active material.Type: ApplicationFiled: September 26, 2013Publication date: December 11, 2014Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Kyung Yoon CHUNG, Ji Ung KIM, Ji-Young KIM, Byung Won CHO, Won Young CHANG
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Publication number: 20140363739Abstract: There is provided a preparation method of a sodium vanadium oxide-based (Na1+xV1-xO2) anode material for a sodium ion secondary battery synthesized by mixing particles of precursors such as sodium carbonate (Na2CO3) and vanadium oxide (V2O3) and pyrolyzing a mixture in a mixed gas atmosphere composed of 90 mol % of nitrogen gas and 10 mol % of hydrogen gas through a solid-state reaction. The sodium vanadium oxide-based anode material prepared according to the present invention shows a small change in volume caused by an initial irreversible capacity and continuous charge/discharge reactions, and thus it is useful for providing a next-generation sodium ion secondary battery having stable charge/discharge characteristics and cycle performance.Type: ApplicationFiled: August 14, 2013Publication date: December 11, 2014Applicant: Korea Institute Of Science And TechnologyInventors: Hyung Sun KIM, Byung Won CHO, Si Hyoung OH, Ju Hyeon AHN, Yong Ho LEE, Won Chang CHOI
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Publication number: 20140363737Abstract: A lithium ion secondary battery in which a high capacity, as well as a high level of safety, is achieved, by using an oxide material containing Li and Fe for a negative electrode active material. In the lithium ion secondary battery, the negative electrode active material is a mixed phase of LiFeO2 and LiFe5O8 and a material in which the value calculated as the ratio of the height of a diffraction peak belonging to LiFeO2 (200) plane and the height of a diffraction peak belonging to LiFe5O8 (311) plane, which are obtained by X-ray diffraction method, is 0.18 to 20.4.Type: ApplicationFiled: December 5, 2012Publication date: December 11, 2014Applicant: Hitachi, Ltd.Inventor: Kazushige Kohno
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Publication number: 20140361226Abstract: This invention relates to an anode active material comprising at least one iron oxide selected from the group consisting of amorphous iron oxides, ferrihydrite, and lepidocrocite. The invention also relates to a lithium ion secondary battery anode material comprising the anode active material as a constituent component, a lithium ion secondary battery anode comprising the lithium ion secondary battery anode material, and a lithium ion secondary battery comprising the lithium ion secondary battery anode.Type: ApplicationFiled: December 27, 2012Publication date: December 11, 2014Applicants: National University Corporation Okayama University, Kyoto University, Tokyo Institute of TechnologyInventors: Jun Takada, Hideki Hashimoto, Tatsuo Fujii, Makoto Nakanishi, Ryoji Kanno, Genki Kobayashi, Mikio Takano
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Publication number: 20140363715Abstract: To provide a binder for a storage battery device, whereby good adhesion in an electrode and flexibility are obtainable, and it is possible to realize good charge and discharge characteristics when used for a secondary battery. A binder for a storage battery device, which is made of a fluorinated copolymer comprising structural units (a) derived from tetrafluoroethylene and structural units (b) derived from propylene, wherein the molar ratio (a)/(b) is from 40/60 to 50/50, and the total of the structural units (a) and (b) is at least 90 mol % in all structural units.Type: ApplicationFiled: August 26, 2014Publication date: December 11, 2014Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Mizuna TOYODA, Takehiro KOSE, Hiroki NAGAI
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Patent number: 8906551Abstract: The present disclosure is directed at an electrode for a battery wherein the electrode comprises clathrate alloys of silicon, germanium or tin. In method form, the present disclosure is directed at methods of forming clathrate alloys of silicon, germanium or tin which methods lead to the formation of empty cage structures suitable for use as electrodes in rechargeable type batteries.Type: GrantFiled: April 20, 2012Date of Patent: December 9, 2014Assignee: Southwest Research InstituteInventors: Candace K. Chan, Michael A. Miller, Kwai S. Chan
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Patent number: 8906557Abstract: Anode active materials and methods of preparing the same are provided. One anode active material includes a carbonaceous material capable of improving battery cycle characteristics. The carbonaceous material bonds to and coats metal active material particles and fibrous metallic particles to suppress volumetric changes.Type: GrantFiled: March 22, 2007Date of Patent: December 9, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Gue-sung Kim, Yong-nam Ham, Han-su Kim, Dong-min Im
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Patent number: 8906254Abstract: Disclosed are a cathode material for a secondary battery, and a manufacturing method of the same. The cathode material includes a lithium manganese phosphate LiMnPO4/sodium manganese fluorophosphate Na2MnPO4F composite, in which the LiMnPO4 and Na2MnPO4F have different crystal structures. Additionally, the method of manufacturing the cathode material may be done in a single step through a hydrothermal synthesis, which greatly reduces the time and cost of production. Additionally, the disclosure provides that the electric conductivity of the cathode material may be improved through carbon coating, thereby providing a cathode material with excellent electrochemical activity.Type: GrantFiled: May 31, 2012Date of Patent: December 9, 2014Assignees: Hyundai Motor Company, Korea Electronics Technology InstituteInventors: Sa Heum Kim, Dong Gun Kim, Young Jun Kim, Jun Ho Song, Woo Suk Cho, Jeom Soo Kim, Dong Jin Kim
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Patent number: 8906255Abstract: The lithium-ion secondary battery in which a positive electrode contains Lia(M)b(PO4)cFd (M=VO or V, 0.9?a?3.3, 0.9?b?2.2, 0.9?c?3.3, 0?d?2.0) as an active material and 1 to 300 ppm of sulfur is used.Type: GrantFiled: March 18, 2013Date of Patent: December 9, 2014Assignee: TDK CorporationInventors: Atsushi Sano, Keitaro Otsuki
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Publication number: 20140356702Abstract: Provided is a positive electrode for an alkaline storage battery, capable of achieving a high charge efficiency over a wide range of temperature including high temperatures. The positive electrode includes a positive electrode material mixture including: a nickel oxide as a positive electrode active material; a first additive; and a second additive differing from the first additive. An amount of sulfate ions SO42? remaining in the nickel oxide is 0.45 mass % or less. The first additive is a compound including at least one selected from the group consisting of ytterbium, indium, calcium, barium, beryllium, antimony, erbium, thulium, and lutetium. The second additive is a compound including at least one selected from the group consisting of titanium, vanadium, scandium, niobium, zirconium, and zinc.Type: ApplicationFiled: March 4, 2013Publication date: December 4, 2014Inventor: Kiyoshi Hayashi
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Publication number: 20140353555Abstract: A method of manufacturing a multicomponent lithium phosphate compound particle with an olivine structure of formula LiyM11-ZM2ZPO4, M1 is Fe, Mn or Co; Y satisfies 0.9?Y?1.2; M2 is Mn, Co, Mg, Ti or Al; and Z satisfies 0<Z?0.1, in which the M2 concentration is continuously lowered from a surface of the particle to a core portion of the particle. The method includes mixing a lithium M1 phosphate compound with an olivine structure of formula LiXM1PO4, M1 is Fe, Mn or Co, and X satisfies 0.9?X?1.2, and a precursor of a lithium M2 phosphate compound with an olivine structure of formula LiXM2PO4, M2 is Mn, Co, Mg, Ti or Al, and X satisfies 0.9?X?1.2, to form a mixture; and subjecting the mixture to heating in an inert atmosphere or a vacuum.Type: ApplicationFiled: August 14, 2014Publication date: December 4, 2014Applicants: THE FURUKAWA BATTERY CO., LTD., SUMITOMO OSAKA CEMENT CO., LTD., TOKYO METROPOLITAN UNIVERSITYInventors: Hidetoshi ABE, Tomonori SUZUKI, Takashi EGURO, Kiyoshi KANAMURA, Mitsumasa SAITO
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Publication number: 20140353547Abstract: Provided is a new spinel type lithium manganese transition metal oxide for use in lithium batteries, which can increase the capacity retention ratio during cycling, and can increase the power output retention ratio during cycling. Disclosed is a spinel type lithium manganese transition metal oxide having an angle of repose of 50° to 75°, and having an amount of moisture (25° C. to 300° C.) measured by the Karl Fischer method of more than 0 ppm and less than 400 ppm.Type: ApplicationFiled: December 27, 2012Publication date: December 4, 2014Inventors: Tetsuya Mitsumoto, Hitohiko Ide, Shinya Kagei, Yoshimi Hata, Natsumi Shibamura
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Publication number: 20140353548Abstract: The present invention provides a LiCoO2-containing powder comprising LiCoO2 having a stoichiometric composition via heat treatment of a lithium cobalt oxide and a lithium buffer material to make equilibrium of a lithium chemical potential therebetween; a lithium buffer material which acts as a Li acceptor or a Li donor to remove or supplement Li-excess or Li-deficiency, coexisting with a stoichiometric lithium metal oxide; and a method for preparing a LiCoO2-containing powder. Further, provided is an electrode comprising the above-mentioned LiCoO2-containing powder as an active material, and a rechargeable battery comprising the same electrode. The present invention enables production of a LiCoO2 electrode active material which has improved high-temperature storage properties and high-voltage cycling properties, and is robust in composition fluctuation in the production process.Type: ApplicationFiled: August 20, 2014Publication date: December 4, 2014Inventors: Jens M. Paulsen, Sun Sik Shin, Hong-Kyu Park
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Publication number: 20140356720Abstract: A substituted lithium-manganese metal phosphate of formula LiFexMn1-x-yMyPO4 in which M is a bivalent metal from the group Sn, Pb, Zn, Ca, Sr, Ba, Co, Ti and Cd and wherein: x<1, y<0.3 and x+y<1, a process for producing it as well as its use as cathode material in a secondary lithium-ion battery.Type: ApplicationFiled: January 28, 2011Publication date: December 4, 2014Applicant: SUED-CHEMIE IP GMBH & CO. KGInventors: Gerhard Nuspl, Nicholas Tran, Jasmin Dollinger, Christian Vogler
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Publication number: 20140353545Abstract: Provided is a method for preparing a lithium mixed transition metal oxide, comprising subjecting Li2CO3 and a mixed transition metal precursor to a solid-state reaction under an oxygen-deficient atmosphere with an oxygen concentration of 10 to 50% to thereby prepare a powdered lithium mixed transition metal oxide having a composition represented by Formula I of LixMyO2 wherein M, x and y are as defined in the specification. Therefore, since the high-Ni lithium mixed transition metal oxide having a given composition can be prepared by a simple solid-state reaction in air, using a raw material that is cheap and easy to handle, the present invention enables industrial-scale production of the lithium mixed transition metal oxide with significantly decreased production costs and high production efficiency.Type: ApplicationFiled: July 17, 2014Publication date: December 4, 2014Applicant: LG Chem, Ltd.Inventors: Hong-Kyu Park, Sun sik Shin, Sin young Park, Ho suk Shin, Jens M. Paulsen
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Publication number: 20140356712Abstract: Disclosed are a precursor for a rechargeable lithium battery, a positive active material including the same, a preparation method thereof, and a rechargeable lithium battery including the positive active material. More particularly, the present invention relates to a precursor including a sheet-shaped plate having a thickness of about 1 nm to about 30 nm and that is represented by the following Chemical Formula 1. NixCOyMn1-x-y-zMz(OH)2??[Chemical Formula 1] In the above Chemical Formula 1, 0<x<1, 0?y<1, 0.5?1?x?y?z, and 0?z<1, and M is at least one kind of metal selected from the group consisting of Al, Mg, Fe, Cu, Zn, Cr, Ag, Ca, Na, K, In, Ga, Ge, V, Mo, Nb, Si, Ti, and Zr.Type: ApplicationFiled: September 18, 2012Publication date: December 4, 2014Inventors: Jun Ho Song, Young Jun Kim, Jeom-Soo Kim, Woo Suk Cho, Jae-Hun Kim, Jun Sung Lee, Jin Hwa Kim, Kyoung Joon Lee
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Publication number: 20140356708Abstract: The present invention is to provide a negative electrode active material for nonaqueous secondary batteries, which prevents increase in negative electrode resistance and improves initial charge/discharge efficiency and the effect of preventing gas generation and which is excellent in cycle characteristics. The present invention relates to a negative electrode active material for nonaqueous secondary batteries, which comprises an active material (A) capable of occluding and releasing lithium ions and an organic compound (B), wherein the organic compound (B) has a basic group and a lithium ion-coordinating group, and has a specific structure (S).Type: ApplicationFiled: August 14, 2014Publication date: December 4, 2014Applicant: Mitsubishi Chemical CorporationInventors: Yuuya ARIKAWA, Teruyuki Okayasu, Rie Fujita, Aoi Sakai, Naomi Fujimori, Nobuhiko Ueno, Naoto Maru
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Publication number: 20140356719Abstract: 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: ApplicationFiled: August 15, 2014Publication date: December 4, 2014Inventors: Sinyoung PARK, Sung kyun CHANG, Hong-Kyu PARK, Seung Tae HONG, Youngsun CHOI
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Publication number: 20140353546Abstract: A negative electrode active material for an electric device includes an alloy containing, in terms of mass ratio, 35%?Si?78%, 7%?Sn?30%, 0%<Ti?37% and/or 35%?Si?52%, 30%?Sn?51%, 0%<Ti?35%, and inevitable impurities as a residue. The negative electrode active material can be obtained with a multi DC magnetron sputtering apparatus by use of, for example, silicon, tin and titanium as targets. An electric device employing the negative electrode active material can keep a high discharge capacity and ensure a high cycle property.Type: ApplicationFiled: November 5, 2012Publication date: December 4, 2014Inventors: Manabu Watanabe, Osamu Tanaka, Masao Yoshida
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Patent number: 8900490Abstract: This invention provides a titanic acid compound-type electrode active material having a high battery capacity and, at the same time, having excellent cycle characteristics. The titanic acid compound exhibits an X-ray diffraction pattern corresponding to a bronze-type titanium dioxide except for a peak for a (003) face and a (?601) face and having a lattice spacing difference between the (003) face and the (?601) face, i.e., d(003)?d(?601), of not more than 0.0040 nm. The titanic acid compound may be produced by reacting a layered alkali metal titanate, represented by a compositional formula MxM?x/3Ti2?x/3O4 wherein M and M?, which may be the same or different, represent an alkali metal; and x is in the range of 0.50 to 1.0, with an acidic compound and then heating the reaction product at a temperature in the range of 250 to 450° C.Type: GrantFiled: August 27, 2008Date of Patent: December 2, 2014Assignee: Ishihara Sangyo Kaisha, Ltd.Inventors: Hirofumi Taniguchi, Masatoshi Honma
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Publication number: 20140346394Abstract: 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: ApplicationFiled: August 15, 2014Publication date: November 27, 2014Inventors: Sinyoung PARK, Sung kyun CHANG, Hong-Kyu PARK, Seung Tae HONG, Youngsun CHOI
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Publication number: 20140346393Abstract: Disclosed is a transition metal precursor used for preparation of lithium composite transition metal oxide, the transition metal precursor comprising a composite transition metal compound represented by the following Formula 1: M(OH1?x)2?yAy/n??(1) wherein M comprises two or more selected from the group consisting of Ni, Co, Mn, Al, Cu, Fe, Mg, B, Cr and second period transition metals; A comprises one or more anions except OH1?x; 0?x?0.5; 0.01?y?0.5; and n is an oxidation number of A. The transition metal precursor according to the present invention contains a specific anion. A lithium composite transition metal oxide prepared using the transition metal precursor comprises the anion homogeneously present on the surface and inside thereof, and a secondary battery based on the lithium composite transition metal oxide thus exerts superior power and lifespan characteristics, and high charge and discharge efficiency.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventors: Byung Chun Park, Ho Suk Shin, Sung-Kyun Chang, Seong Hoon Kang, Dong Hun Lee, Sang Min Park
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Publication number: 20140349184Abstract: The presently disclosed and/or claimed inventive process(es), procedure(s), method(s), product(s), result(s), and/or concept(s) (collectively hereinafter referred to as the “presently disclosed and/or claimed inventive concept(s)”) relates generally to the composition of a binder for use in battery electrodes and methods of preparing such. More particularly, but not by way of limitation, the presently disclosed and/or claimed inventive concept(s) relates to a binder composition containing an ionizable water soluble polymer and a redispersible powder containing a latex, a protective colloid, and an anticaking agent for use in the production and manufacture of electrodes of a lithium ion battery. Additionally, the presently disclosed and/or claimed inventive concept(s) relates generally to the compositions and methods of making electrodes, both anodes and cathodes, with a binder composition containing an ionizable water soluble polymer and a redispersible powder.Type: ApplicationFiled: May 21, 2014Publication date: November 27, 2014Applicant: HERCULES CORPORATEDInventors: Sung Gun Chu, Alan E Goliaszewski
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Publication number: 20140346392Abstract: Provided is a method for manufacturing a cathode active material for a lithium secondary battery, the method including heat-treating a precursor aqueous solution containing a lithium precursor, a transition metal precursor, and an organic acid containing a carboxyl group, and having a chelation index (C.I) value less than 1 and 0.5 or more, wherein the chelation index value is defined by transmittance of a peak located in a wavenumber from 1,700 to 1,710 cm?1 and transmittance of a peak located in a wavenumber from 1,550 to 1,610 cm?1 in Fourier transform infrared (FTIR) spectroscopy spectrum.Type: ApplicationFiled: December 6, 2012Publication date: November 27, 2014Inventors: Jung In Yeon, Kook Hyun Han, Min Gu Kang, Seong Ho Lee
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Publication number: 20140349185Abstract: A binder resin composition for secondary battery electrodes is described as containing a polymer (A) that has a structural unit represented by general formula (1) and a water-insoluble particulate polymer (B-1) and/or a water-soluble polymer (B-2) where (A), (B-1) and (B-2) are defined as described. A slurry for secondary battery electrodes contains the binder resin composition, an active material and a solvent. An electrode for secondary batteries is provided with a collector and an electrode layer that is arranged on the collector, where the electrode layer contains an active material and the binder resin composition. Alternatively, the electrode layer is obtained by applying the slurry for secondary battery electrodes to the collector, and drying the slurry thereon.Type: ApplicationFiled: January 11, 2013Publication date: November 27, 2014Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Fumino Momose, Haruki Okada, Ayako Shimonaka, Mitsufumi Nodono, Daisuke Fujikawa, Hikaru Momose, Akihiro Ishii