Plural Cyclic Carbonate Solvents Patents (Class 429/331)
  • Patent number: 10892467
    Abstract: A nonaqueous electrolyte secondary battery includes an electrode assembly including a negative plate and a positive plate including a positive electrode active material mix layer, a nonaqueous electrolyte, a battery case that houses the electrode assembly and the nonaqueous electrolyte, and a pressure-sensitive safety system that operates when the pressure in the battery case reaches a value greater than or equal to a predetermined value. The positive electrode active material mix layer contains lithium carbonate and lithium phosphate. The average particle size of lithium carbonate contained in the positive electrode active material mix layer is greater than the average particle size of lithium phosphate contained in the positive electrode active material mix layer. The number of particles of lithium carbonate contained in the positive electrode active material mix layer is less than the number of particles of lithium phosphate contained in the positive electrode active material mix layer.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: January 12, 2021
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yuu Takanashi, Masao Inoue, Toyoki Fujihara
  • Patent number: 10833316
    Abstract: Provided is a battery including: a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte solution containing a nonaqueous solvent. The positive electrode active material contains a compound represented by composition formula (1) below and having a crystal structure belonging to space group FM3-M: LixMeyO?F?. (1) Here, Me is one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and C. x, y, ?, and ? satisfy the following conditions: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2, respectively. The nonaqueous solvent includes at least one solvent selected from hydrofluoroethers, phosphazenes, phosphates, and perfluoropolyethers.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: November 10, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hirotetsu Suzuki, Ryuichi Natsui, Nobuhiko Hojo
  • Patent number: 10833315
    Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a nonaqueous solvent. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyO?F?, where, Me is one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr; and subscripts x, y, ?, and ? satisfy the following requirements: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2. The nonaqueous solvent includes a solvent having at least one fluoro group.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: November 10, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takayuki Nakatsutsumi, Ryuichi Natsui, Nobuhiko Hojo
  • Patent number: 10811672
    Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyO?F?, where, Me is one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr; and subscripts x, y, ?, and ? satisfy the following requirements: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2. The additive is at least one selected from dinitrile compounds and diisocyanate compounds.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: October 20, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takayuki Nakatsutsumi, Ryuichi Natsui, Nobuhiko Hojo
  • Patent number: 10707529
    Abstract: A lithium secondary battery including: a cathode including a high-voltage cathode active material; an anode; and an electrolyte disposed between the cathode and the anode, wherein the high-voltage cathode active material has a charge cut-off voltage of about 4.2 Volts or greater with respect to a lithium (Li) counter electrode, and wherein the electrolyte includes an organic fluorinated ether compound represented by Formula 1, an organic solvent, and a lithium salt: R1—O—CFnH2-n—R2??Formula 1 wherein, in Formula 1, R1 is a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C1-C10 fluorinated alkyl group, or a C3-C10 fluorinated cycloalkyl group; R2 is hydrogen, fluorine, a C1-C10 alkyl group, a C3-C10 cycloalkyl group, a C1-C10 fluorinated alkyl group, or a C3-C10 fluorinated cycloalkyl group; and n is 1 or 2.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: July 7, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Dongyoung Kim, Jinah Seo, Hosang Park, Yoonsok Kang, Jungjoo Cho
  • Patent number: 10615419
    Abstract: A positive electrode for nonaqueous electrolyte secondary batteries having a positive electrode current collector and a positive electrode mixture layer that is formed on the positive electrode current collector.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: April 7, 2020
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yasunari Sugita, Tomoki Shiozaki, Kazuki Endo
  • Patent number: 10581112
    Abstract: An electrolyte composition and an electrochemical cell that includes the electrolyte composition are included. The electrolyte composition includes: at least one aprotic organic solvent; at least one conducting salt; methylphosphonoyloxymethane; and optionally one or more additives. The use of methylphosphonoyloxymethane in an electrolyte composition for electrochemical cells is also included.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: March 3, 2020
    Assignee: Gotion Inc.
    Inventor: Rene Schmitz
  • Patent number: 10483590
    Abstract: The present application provides an electrolyte for lithium ion battery which comprising a mixture of organic solvents consisting of ethylene carbonate, ethyl methyl carbonate, dimethyl carbonate and carboxylate ester, wherein a mass ratio of ethylene carbonate, ethyl methyl carbonate, dimethyl carbonate and carboxylate ester is (20%-30%):(45%-55%):(10%-20%):(5%-15%); a mixture of additives consisting of vinylene carbonate, propane sultone, fluorinated ethylene carbonate and perfluorohexylsulfonyl fluoride; and a lithium salt. The electrolyte for lithium ion battery provided according to the present application has good wettability and high absorption rate. The present application also provides a lithium ion battery with high energy density, small internal resistance, good cycle performance and good charge and discharge performance.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: November 19, 2019
    Assignee: OPTIMUM BATTERY CO., LTD.
    Inventors: Xilin Liu, Mumin Rao, Yao Li
  • Patent number: 10468720
    Abstract: An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyuki Tokuda, Minoru Kotato, Shinichi Kinoshita
  • Patent number: 10333175
    Abstract: A nonaqueous electrolyte secondary battery having an electrode group in which a positive electrode plate containing a positive electrode active material and a negative electrode plate containing a negative electrode active material are wound with a separator there between. The positive electrode active material uses a lithium transition metal oxide represented by the formula LiaNixM1?xO2 (0.9?a?1.2, 0.8?x<1, and M is at least one element of Co, Mn, and Al). The positive electrode plate is provided with a current-collecting tab placed in a position that is 200 mm or more apart from the winding start of the positive electrode plate. The separator has an MD direction tensile strength (SMD)-to-TD direction tensile strength (STD) ratio (SMD/STD) of from 0.72 to 1.37 and an MD direction tensile elongation (EMD)-to-TD direction tensile elongation (ETD) ratio (EMD/ETD) of from 0.34 to 1.29.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: June 25, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yuko Nowatari, Naoya Tsukamoto
  • Patent number: 10312546
    Abstract: A non-aqueous liquid electrolyte for a secondary battery, containing an electrolyte and a compound (A) represented by any one of formulae (I-1) to (I-3) in an organic solvent: wherein X1 represents an alkyl group substituted with a halogen atom; Y1 represents a hydrogen atom or an organic group; and ma represents an integer from 1 to 6; wherein X2 represents a group having an oxygen atom; Y2 represents a hydrogen atom or an organic group; and mb represents an integer from 1 to 6; and wherein Y3 represents an organic group having 4 or more carbon atoms, or an organic group having an oxygen atom or a nitrogen atom; and mc represents an integer from 1 to 6.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: June 4, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Kunihiko Kodama
  • Patent number: 10242809
    Abstract: A non-aqueous lithium-type power storage element comprising an electrode laminate body and a non-aqueous electrolyte being housed in an external body, the electrode laminate body having a negative electrode body, a positive electrode body and a separator.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: March 26, 2019
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Nobuhiro Okada, Yusuke Yamahata, Kensuke Niimura, Yuima Kimura, Osamu Saito
  • Patent number: 10211454
    Abstract: Disclosed are functionalized Group IVA particles, methods of preparing the Group IVA particles, and methods of using the Group IVA particles. The Group IVA particles may be passivated with at least one layer of material covering at least a portion of the particle. The layer of material may be a covalently bonded non-dielectric layer of material. The Group IVA particles may be used in various technologies, including lithium ion batteries and photovoltaic cells.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: February 19, 2019
    Assignee: Kratos LLC
    Inventors: Timothy D. Newbound, Leslie Matthews, Jeff A. Norris
  • Patent number: 10069168
    Abstract: A battery capable of improving high-temperature characteristics is provided. The battery includes a cathode, an anode and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. A solvent of the electrolytic solution includes a main solvent such as a cyclic carbonate which includes halogen and a sub solvent such as carbonate dimer.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: September 4, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Kiyohiko Suzuki, Akinori Kita, Tadahiko Kubota
  • Patent number: 10056648
    Abstract: Disclosed is a secondary battery including an electrode assembly, which includes a cathode, an anode and a separator interposed therebetween, and an electrolyte, wherein the anode includes lithium titanium oxide (LTO) as an anode active material and the electrolyte contains a phosphate-based compound as an additive.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: August 21, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung-Ho Ahn, Chul-Haeng Lee, Doo-Kyung Yang, Jong-Ho Jeon, Yoo-Seok Kim, Min-Jung Kim, Jung-Hoon Lee, Yi-Jin Jung
  • Patent number: 10008745
    Abstract: A secondary battery capable of improving high-temperature characteristics is provided. The secondary battery includes a cathode, an anode and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. A solvent of the electrolytic solution includes a main solvent such as a cyclic carbonate which includes halogen and a sub solvent such as carbonate dimer.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: June 26, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Kiyohiko Suzuki, Akinori Kita, Tadahiko Kubota
  • Patent number: 9966632
    Abstract: Provided are a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of 1,3-dioxane and further containing from 0.001 to 5% by mass of at least one selected from a specified phosphoric acid ester compound, a specified cyclic sulfonic acid ester compound, and a cyclic acid anhydride containing a side chain having allyl hydrogen; and an energy storage device using the same. This nonaqueous electrolytic solution is capable of improving electrochemical characteristics at high temperatures and further capable of not only improving a capacity retention rate after a high-temperature cycle test but also decreasing a rate of increase of an electrode thickness.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: May 8, 2018
    Assignee: UBE INDUSTRIES, LTD.
    Inventor: Koji Abe
  • Patent number: 9929406
    Abstract: A nonaqueous electrolyte secondary battery includes: a negative electrode current collector foil; and a negative electrode mixture layer that is arranged on the negative electrode current collector foil. The negative electrode mixture layer contains a plurality of granulated particles. Each of the granulated particles contains a negative electrode active material and a coating film. The coating film is formed on a surface of the negative electrode active material. The coating film includes a first film and a second film. The first film is formed on the surface of the negative electrode active material. The second film is formed on the first film. The first film contains a carboxymethyl cellulose polymer. The second film contains a polyacrylic acid polymer.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 27, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya Umeyama, Tatsuya Hashimoto, Naoyuki Wada, Yusuke Fukumoto, Naoto Onodera, Yuji Yokoyama
  • Patent number: 9859564
    Abstract: A positive electrode for nonaqueous electrolyte secondary batteries having a positive electrode current collector and a positive electrode mixture layer that is formed on the positive electrode current collector.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: January 2, 2018
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yasunari Sugita, Tomoki Shiozaki, Kazuki Endo
  • Patent number: 9831532
    Abstract: The present application provides a nonaqueous electrolyte secondary battery that includes, a cathode capable of being electrochemically doped/dedoped with lithium, an anode capable of being electrochemically doped/dedoped with lithium, and an electrolyte placed between the cathode and the anode, wherein the electrolyte contains at least one of fluoro ethylene carbonate represented by Chemical Formula (1) and difluoro ethylene carbonate represented by Chemical Formula (2) as a solvent and the ratio of a discharge capacity B during discharging at a 5C rate to a discharge capacity A during discharging at a 0.2C rate ((B/A)×100) is 80% or more.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: November 28, 2017
    Assignee: Sony Corporation
    Inventors: Akira Yamaguchi, Kunihiko Hayashi, Tadahiko Kubota, Hiroyuki Suzuki, Akira Ichihashi, Yuzuru Fukushima, Hironori Sato, Masaki Kuratsuka, Hideto Watanabe, Kimio Tajima, Masahiro Miyamoto
  • Patent number: 9819026
    Abstract: A positive electrode for a non-aqueous electrolyte secondary battery, comprising: a positive electrode current collector and a positive electrode active substance layer formed upon the positive electrode current collector. The positive electrode active substance layer has a positive electrode active substance and a melamine-acid salt being a salt comprising melamine and acid.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: November 14, 2017
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Tomoki Shiozaki, Yasunari Sugita, Kazuki Endo
  • Patent number: 9786905
    Abstract: Provided herein are energy storage device cathodes with high capacity electrochemically active material including compounds that include iron, fluorine, sulfur, and optionally oxygen. Batteries with active materials including a compound of the formula FeFaSbOc exhibit high capacity, high specific energy, high average discharge voltage, and low hysteresis, even when discharged at high rates. Iron, fluorine, and sulfur-containing compounds may be ionically and electronically conductive.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: October 10, 2017
    Assignee: QuantumScape Corporation
    Inventors: Timothy P. Holme, Joseph Han, Weston Arthur Hermann, Rainer J. Fasching, Bradley O. Stimson, Cheng Chieh Chao
  • Patent number: 9748575
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode that includes a positive electrode current collector, an intermediate layer on the positive electrode current collector, and a positive electrode mix layer on the intermediate layer. The intermediate layer contains a flame retardant and a conductive material having a heat conductivity of 10 W/m·K or more.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: August 29, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Yasunari Sugita, Kazuki Endo, Tomoki Shiozaki
  • Patent number: 9742031
    Abstract: The present invention discloses a lithium battery, which comprises of a positive electrode plate, a negative electrode current collector substrate, a separator and electrolyte between the positive electrode plate and the negative electrode current collector substrate. The positive electrode plate comprises a positive electrode collector, a positive electrode active material-containing positive electrode layer attached to the positive electrode collector and positive electrode tab welded to the positive electrode collector. The negative electrode current collector substrate comprises a negative electrode current collector and negative electrode tab welded to the negative electrode current collector. The negative electrode current collector substrate is a current collector substrate with 6˜60 ?m thickness having a planar or concavo-convex structure which is made from metal foil material or metal mesh with 6˜25 ?m thickness.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: August 22, 2017
    Assignee: EVE Energy Co., Ltd.
    Inventors: Zhengzhong Lv, Fanfen Liu, Zhongzhi Yuan, Jincheng Liu
  • Patent number: 9742004
    Abstract: The present disclosure refers to a lithium secondary battery comprising Li2NiO2 in a cathode active material so as to improve the phenomenon that the capacity retention ratio decreases at initial cycles when using an anode active material selected from the group consisting of Si, SiC, SiOx (0<x<2), Sn, SnO2, Sb, Ge and a mixture thereof. The lithium secondary battery according to the present disclosure can substantially improve the decrease of a capacity retention ratio during initial cycles.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: August 22, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Sun-Ju Park, Sook Yun, Vin-Na Jo, Cha-Hun Ku, Pil-Kyu Park
  • Patent number: 9673450
    Abstract: A lithium ion battery that has a spinel cathode and a nonaqueous electrolyte comprising a fluorinated acyclic carboxylic acid ester and/or a fluorinated acyclic carbonate solvent is described. The lithium ion battery operates at a high voltage (i.e. up to about 5 V) and has improved cycling performance at high temperature.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: June 6, 2017
    Assignee: Solvay SA
    Inventors: Xudong Chen, Jun J Liu, Mark Gerrit Roelofs
  • Patent number: 9564658
    Abstract: The present disclosure provides a lithium-ion secondary battery and an electrolyte thereof. The electrolyte comprises a lithium salt; a non-aqueous solvent and an additive comprising a first additive and a second additive, the first additive comprises at least one of vinylene carbonate and vinyl ethylene carbonate, the second additive is 4-methylene-1,3-dioxolan-2-one and its derivatives with a structural formula 1 and/or 4,5-dimethylene-1,3-dioxolan-2-one and its derivatives with a structural formula 2; in the structural formula 1 and the structural formula 2, R1, R2, R3 and R4 each are hydrogen, halogen, C1˜C3 alkyl or halogenated alkyl; a weight percentage of the first additive in the electrolyte is 0.2%˜2.0%, a weight percentage of the second additive in the electrolyte is 0.3%˜4.0%. The lithium-ion secondary battery comprises the aforementioned electrolyte.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: February 7, 2017
    Assignee: NINGDE AMPEREX TECHNOLOGY LIMITED
    Inventors: Chunbo Chu, Chenghua Fu
  • Patent number: 9543618
    Abstract: An objection is to provide a high performance secondary battery having good flame retardancy and cycle properties. The present exemplary embodiment provides a secondary battery comprising an electrode assembly in which a positive electrode and a negative electrode are arranged to face each other, an electrolyte liquid and a package accommodating the electrode assembly and the electrolyte liquid, wherein the negative electrode is formed by binding a negative electrode active substance comprising a metal (a) capable of being alloyed with lithium, a metal oxide (b) capable of occluding and releasing lithium ions and a carbon material (c) capable of occluding and releasing lithium ions, to a negative electrode current collector, with a negative electrode binder, and the electrolyte liquid comprises a supporting salt and an electrolytic solvent, the electrolytic solvent comprising at least one phosphate ester compound selected from phosphite esters, phosphonate esters and bisphosphonate esters.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: January 10, 2017
    Assignee: NEC CORPORATION
    Inventors: Kazuaki Matsumoto, Daisuke Kawasaki, Masahiro Suguro, Midori Shimura, Yoko Hashizume
  • Patent number: 9455474
    Abstract: Provided is an electrolytic solution exhibiting excellent withstand voltage and satisfactory characteristics even at low and high temperatures. The invention is an electrolytic solution that includes a cyclic carbonate (I-1) represented by formula (I-1): (in the formula, R is an alkyl group having two or more carbon atoms, a fluorine-containing alkyl group having two or more carbon atoms, an alkoxy group or a fluorine-containing alkoxy group, in which an oxygen atom may be inserted between carbon atoms); a cyclic carbonate (I-2) different from the cyclic carbonate (I-1); and an electrolyte salt (II)).
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: September 27, 2016
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Meiten Koh, Hideo Sakata, Hitomi Nakazawa, Tomoyo Sanagi, Kyouhei Sawaki, Akiyoshi Yamauchi, Aoi Nakazono, Yuki Adachi
  • Patent number: 9401528
    Abstract: Electrochemical devices which incorporate cathode materials that include layered crystalline compounds for which a structural modification has been achieved which increases the diffusion rate of multi-valent ions into and out of the cathode materials. Examples in which the layer spacing of the layered electrode materials is modified to have a specific spacing range such that the spacing is optimal for diffusion of magnesium ions are presented. An electrochemical cell comprised of a positive intercalation electrode, a negative metal electrode, and a separator impregnated with a nonaqueous electrolyte solution containing multi-valent ions and arranged between the positive electrode and the negative electrode active material is described.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: July 26, 2016
    Assignee: PELLION TECHNOLOGIES, INC.
    Inventors: Robert Ellis Doe, Craig Michael Downie, Christopher Fischer, George Hamilton Lane, Dane Morgan, Josh Nevin, Gerbrand Ceder, Kristin Aslaug Persson, David Eaglesham
  • Patent number: 9391343
    Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly, a nonaqueous electrolyte, and a container. The electrode assembly has a positive electrode, a negative electrode, and a separator. The positive electrode contains particles of a lithium transition metal compound as a positive electrode active material. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The nonaqueous electrolyte contains lithium difluorophosphate. The container houses the electrode assembly and the nonaqueous electrolyte. The battery capacity is not less than 21 Ah. The mean particle diameter (D50) of the particles of the lithium transition metal compound is not less than 5 ?m and not more than 15 ?m. The (D90?D10)/D50 of the particles of the lithium transition metal compound is under 1.1.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: July 12, 2016
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Daisuke Ikeda, Keisuke Minami, Toyoki Fujihara, Toshiyuki Nohma
  • Patent number: 9312532
    Abstract: A negative electrode material for lithium ion secondary batteries comprises amorphous coated particles that are composed of a plurality of consolidated particles having no specific shape, said consolidated particles being obtained by consolidating a plurality of primary spheroidized graphite particles, and 0.5-20% by mass of an amorphous carbon layer that covers the surfaces of the consolidated particles and binds the consolidated particles with each other; and 0.5-20% by mass of a highly crystalline carbon layer that is formed so as to cover the outer surfaces of the amorphous coated particles and has an interplanar distance ascribed to CVD processing of 0.335 nm or more but less than 0.3369 nm. The negative electrode material for lithium ion secondary batteries is also characterized by having a porosity of 5% by volume or less, and a method for producing the negative electrode material for lithium ion secondary batteries.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: April 12, 2016
    Assignee: Nippon Coke & Engineering Co., Ltd.
    Inventors: Tatsuo Umeno, Tadanori Tsunawaki, Koutarou Mizuma, Shinya Okabe, Shiroh Oie
  • Patent number: 9257718
    Abstract: A secondary battery that can avoid reduction in battery capacity over the lapse of charge-discharge cycles and can exhibit high performance is provided. The secondary battery includes a laminated body having a pair of electrodes and an electrolyte layer provided between the pair of electrodes, the electrolyte layer including electrolyte particles, the laminated body having an end portion, and a restrictor provided so as to cover at least the end portion of the laminated body for restricting expansion of the electrolyte layer in the plane direction thereof.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: February 9, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shigeo Kondo, Yasumasa Takeuchi
  • Patent number: 9225040
    Abstract: Disclosed is a liquid electrolyte for a lithium accumulator and the use thereof in a lithium accumulator at low temperature. The liquid electrolyte includes at least one lithium salt dissolved in a mixture of non-aqueous organic solvents. The mixture of organic solvents is formed by propylene carbonate (PC), ?-butyrolactone (GBL) and ethyl methyl carbonate (EMC). The mixture of organic solvents preferably contains between: 0.5% and 33% in volume of propylene carbonate, 0.5% and 33% in volume of ?-butyrolactone and, 0.5% and 99% in volume of ethyl methyl carbonate, the sum of the respective volume percentages of propylene carbonate, ?-butyrolactone, and ethyl methyl carbonate in the mixture being equal to 100%.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: December 29, 2015
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Nelly Giroud, Hélène Rouault
  • Patent number: 9202604
    Abstract: 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: Grant
    Filed: September 26, 2013
    Date of Patent: December 1, 2015
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kyung Yoon Chung, Ji Ung Kim, Ji-Young Kim, Byung Won Cho, Won Young Chang
  • Patent number: 9196899
    Abstract: An anode active material for use in a lithium secondary battery including a mixture of graphite I that has, according to X-ray powder diffraction, d002 of not smaller than 0.3354 nm and not greater than 0.337 nm, Lc(004) of smaller than 100 nm, La(110) of not smaller than 100 nm, and a half width of the peak of a plane (101) at a diffraction angle (2?) of 44 degrees to 45 degrees of not smaller than 0.65 degree and another graphite so as to have, according to X-ray powder diffraction, d002 of not smaller than 0.3354 nm and not greater than 0.337 nm, Lc(004) of not smaller than 80 nm, La(110) of not smaller than 100 nm, and a half width of the peak of a plane (101) at a diffraction angle (2?) of 44 degrees to 45 degrees of not smaller than 0.5 degree.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: November 24, 2015
    Assignee: SHOWA DENKO K.K.
    Inventors: Chiaki Sotowa, Takahiro Tamura
  • Patent number: 9106090
    Abstract: A method for recovering the capacity of a lithium ion battery determines whether or not the cause of degradation is a decrease in lithium ions; calculates the amount of the decrease in lithium ions; and connects a lithium ion replenishing electrode to a positive electrode or a negative electrode to release lithium ions corresponding to the amount of the decrease from the lithium ion replenishing electrode, thereby replenishing the lithium ion battery with lithium ions for recovery of the battery capacity.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: August 11, 2015
    Assignees: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA, MITSUBISHI JIDOSHA ENGINEERING KABUSHIKI KAISHA
    Inventors: Koichi Taniyama, Kazunori Haraguchi, Kyohei Shimoyama
  • Patent number: 9059477
    Abstract: A secondary battery comprising a cathode, an anode, a separator and an electrolyte that comprises a eutectic mixture formed of: an amide group-containing compound, and an ionizable lithium salt. The anode comprises a metal or metal oxide having a potential vs. lithium potential (Li/Li+) within electrochemical window of the eutectic mixture. Because the secondary battery uses a eutectic mixture as an electrolyte in combination with an anode having a potential vs. lithium potential (Li/Li+) within the electrochemical window of the eutectic mixture, problems such as decomposition of an electrolyte and degradation of the quality of a battery are avoided. Also, due to the thermal and chemical stability, high conductivity and a broad electrochemical window of a eutectic mixture, it is possible to improve the quality as well as safety of a battery.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: June 16, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Jae Seung Oh, Shin Jung Choi, Byoung Bae Lee, Jae Duk Park, Ji Won Park
  • Patent number: 9054390
    Abstract: The present disclosure relates to an electrolyte for a lithium secondary battery, comprising a non-aqueous solvent, a lithium salt and an additive having a perfluoroalkyl group. By including the additive having a specific structure in the electrolyte, the output of the lithium secondary battery can be improved greatly.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: June 9, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Chul Haeng Lee, Min Jung Kim, Doo Kyung Yang
  • Publication number: 20150140444
    Abstract: A lithium ion battery that has a 5 V stabilized manganese cathode and a nonaqueous electrolyte comprising a phosphate additive is described. The lithium ion battery operates with a high voltage cathode (i.e. up to about 5 V) and has improved cycling performance at high temperature.
    Type: Application
    Filed: March 8, 2013
    Publication date: May 21, 2015
    Inventors: Charles J. Dubois, Viacheslav A. Petrov
  • Patent number: 9029021
    Abstract: A method of charging and discharging a battery that includes an anode. The anode includes silicon and is capable of inserting and extracting lithium. At the time of charge, the potential of the anode vs. lithium metal as a reference potential is 0.04 V or more. At the time of discharge, the potential of the anode vs. lithium metal as a reference potential is 1.4 V or less.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: May 12, 2015
    Assignee: Sony Corporation
    Inventor: Tadahiko Kubota
  • Publication number: 20150125759
    Abstract: An energy storage device comprising: (A) an anode comprising graphite; and (B) an electrolyte composition comprising: (i) at least one carbonate solvent; (ii) an additive selected from CsPF6, RbPF6, Sr(PF6)2, Ba(PF6)2, or a mixture thereof; and (iii) a lithium salt.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 7, 2015
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventors: Wu Xu, Hongfa Xiang, Jiguang Zhang, Ruiguo Cao
  • Publication number: 20150118575
    Abstract: A rechargeable lithium battery including a negative electrode including a negative active material, a positive electrode, and an electrolyte solution including an additive, wherein the negative active material includes a Si-based material included in an amount of about 1 to about 70 wt % based on the total amount of the negative electrode, and the additive includes fluoroethylene carbonate and a compound represented by Chemical Formula 1. In the above Chemical Formula 1, R1 to R3 are each independently a substituted or unsubstituted C2 to C5 alkylene group.
    Type: Application
    Filed: September 4, 2014
    Publication date: April 30, 2015
    Inventors: Tae-Hyun Bae, Woo-Cheol Shin, Sang-Hyun Eom, Myung-Hoon Kim, Seung-Tae Lee, Ae-Ran Kim, Dong-Myung Choi, Ha-Rim Lee
  • Publication number: 20150118576
    Abstract: A non-aqueous electrolyte secondary battery which is one example of an embodiment of the present disclosure is a non-aqueous electrolyte secondary battery including a non-aqueous electrolyte which contains a non-aqueous solvent. The non-aqueous solvent contains a fluoroethylene carbonate, a difluorobutylene carbonate, and at least one of a fluorinated chain carbonate and a fluorinated chain carboxylic acid ester, total volumetric contents of which is more than 50 percent with respect to the total volume of the non-aqueous solvent.
    Type: Application
    Filed: October 12, 2014
    Publication date: April 30, 2015
    Inventors: TAKANOBU CHIGA, TAKASHI TAKEUCHI
  • Publication number: 20150099191
    Abstract: A homologous series of cyclic carbonate or propylene carbonate (PC) analogue solvents with increasing length of linear alkyl substitutes were synthesized and used as co-solvents with PC for graphite based lithium ion half cells. A graphite anode reaches a capacity around 310 mAh/g in PC and its analogue co-solvents with 99.95% Coulombic efficiency. Cyclic carbonate co-solvents with longer alkyl chains are able to prevent exfoliation of graphite when used as co-solvents with PC. The cyclic carbonate co-solvents of PC compete for solvation of Li ion with PC solvent, delaying PC co-intercalation. Reduction products of PC on graphite surfaces via single-electron path form a stable Solid Electrolyte Interphase (SEI), which allows the reversible cycling of graphite.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Applicant: The Regents of the University of California
    Inventors: Gao Liu, Hui Zhao, Sang-Jae Park
  • Patent number: 8980483
    Abstract: An electrolyte contains a solvent and an electrolyte salt. The solvent contains an organic acid and a sulfone compound in combination. The organic acid has a moiety containing an electron-withdrawing group such as a carbonyl group (—C(?O)—) or a sulfonyl group (—S(?O)2—) in the center and hydroxyl groups (—OH) at both ends. The sulfone compound is a cyclic compound having a disulfonic anhydride group (—(O?)2S—O—S(?O)2—) or a carboxylic-sulfonic anhydride group (—(O?)2S—O—C(?O)—).
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: March 17, 2015
    Assignee: Sony Corporation
    Inventors: Masayuki Ihara, Shinya Wakita, Tadahiko Kubota
  • Publication number: 20150072247
    Abstract: An electrolyte for a lithium battery, a lithium battery including the electrolyte, and a method of preparing the electrolyte for a lithium battery. The electrolyte for a lithium battery includes a non-aqueous organic solvent; and about 0.1 wt % to about 1 wt % of lithium nitrate (LiNO3) based on a total weight of the non-aqueous organic solvent. By using the electrolyte for a lithium battery, lifespan cycle properties of the lithium battery may be improved.
    Type: Application
    Filed: July 28, 2014
    Publication date: March 12, 2015
    Inventors: In-Haeng Cho, Ha-Rim Lee, Sang-Hoon Kim, Woo-Cheol Shin, Jung-Hyun Nam
  • Publication number: 20150064549
    Abstract: A rechargeable battery cell having a specific combination of anode, cathode and electrolyte formulation is provided. The electrolyte formulation includes an additive system and a salt system. The additive system includes a first additive containing a sulfonyl group, an anti-gassing agent, and a second additive. The salt system includes a lithium salt and a co-salt. The disclosed electrolyte formulation has reduced gassing and improved performance over a wide temperature range.
    Type: Application
    Filed: November 7, 2014
    Publication date: March 5, 2015
    Inventors: Leslie J. Pinnell, Christopher Campion, Antoni S. Gozdz, Jeong Ju Cho
  • Patent number: 8968938
    Abstract: Disclosed are a non-aqueous electrolyte comprising a lithium salt and a solvent, the electrolyte containing, based on the weight of the electrolyte, 10-40 wt % of a compound of Formula 1 or its decomposition product, and 1-40 wt % of an aliphatic nitrile compound, as well as an electrochemical device comprising the non-aqueous electrolyte. Also disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and an anode having formed thereon a coating layer containing a decomposition product of the compound of Formula 1. Moreover, disclosed is an electrochemical device comprising: a cathode having a complex formed between the surface of a cathode active material and an aliphatic nitrile compound; and a non-aqueous electrolyte containing the compound of Formula 1 or its decomposition product.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: March 3, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Young Soo Kim, Soon Ho Ahn, Joon Sung Bae, Cha Hun Ku, Soo Hyun Ha, Duk Hyun Ryu, Sei Lin Yoon
  • Patent number: 8951676
    Abstract: An electrolyte for use in electrochemical cells is provided. The properties of the electrolyte include high conductivity, high Coulombic efficiency, and an electrochemical window that can exceed 3.5 V vs. Mg/Mg+2. The use of the electrolyte promotes the electrochemical deposition and dissolution of Mg without the use of any Grignard reagents, other organometallic materials, tetraphenyl borate, or tetrachloroaluminate derived anions. Other Mg-containing electrolyte systems that are expected to be suitable for use in secondary batteries are also described.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 10, 2015
    Assignee: Pellion Technologies, Inc.
    Inventors: Robert Ellis Doe, George Hamilton Lane, Robert E. Jilek, Jaehee Hwang