The Hetero Ring Is A Cyclic Carbonate (e.g., Ethylene Carbonate, Propylene Carbonate, Etc.) Patents (Class 429/338)
  • Patent number: 11043661
    Abstract: A positive electrode active material contains a lithium composite oxyfluoride and an organosilicon compound binding to the lithium composite oxyfluoride. The organosilicon compound has insulation property.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: June 22, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takayuki Ishikawa, Ryuichi Natsui, Kensuke Nakura
  • Patent number: 11031587
    Abstract: A negative electrode material for a lithium ion battery, including silicon-containing particles, artificial graphite particles and a carbonaceous material, wherein at least part of the silicon-containing particles, the artificial graphite particles and the carbonaceous material form composite particles; wherein the silicon-containing particles are silicon particles having a SiOx (0<x?2) layer on the particle surface, having an oxygen content of 1.0 mass % or more and 18.0 mass % or less, and mainly containing particles having a primary particle diameter of 200 nm or less; wherein the artificial graphite particles are non-flaky artificial graphite particles and have a 50% particle diameter in a volume-based cumulative particle size distribution, D50, of 1.0 ?m or more and 15.0 ?m or less. Also disclosed is a lithium-ion battery including a negative electrode using the negative electrode material.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: June 8, 2021
    Assignees: SHOWA DENKO K. K., UMICORE
    Inventors: Nobuaki Ishii, Arihiro Muto, Yasunari Otsuka, Masataka Takeuchi, Dirk Van Genechten, Stijn Put
  • Patent number: 11031629
    Abstract: Aspects of embodiments of the present disclosure provide an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery including the same. The electrolyte includes a non-aqueous organic solvent, a lithium salt, and additive represented by Chemical Formula 1: In Chemical Formula 1, X1 is CH or a nitrogen atom (N), and Ra is a substituted or unsubstituted alkyl group. The additive may decompose under reducing voltages on the surface of the negative electrode to thereby form a polysulfonate-based passivation film to suppress or reduce gas generation and battery swelling.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: June 8, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyejin Park, Jungjin Moon, Myungheui Woo, Harim Lee, Jin-Hyeok Lim, Seonghun Jeong, Wonseok Cho, Hyunbong Choi
  • Patent number: 11018340
    Abstract: A negative electrode for a rechargeable lithium battery includes a negative active material layer including a negative active material, and a current collector supporting the negative active material layer. The negative active material may include first spherical crystalline carbon, the first spherical crystalline carbon including secondary particles in which primary particles of crystalline carbon are assembled, the first spherical crystalline carbon having a coating of crystalline carbon, second spherical crystalline carbon, the second spherical crystalline carbon including secondary particles in which primary particles of crystalline carbon are assembled, the second spherical crystalline carbon having a coating of amorphous carbon, and flake-shaped graphite.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: May 25, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yoonsoo Park, Taesik Kim, Jae-Hyeon Eom
  • Patent number: 10998580
    Abstract: An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the electrolyte, the electrolyte including a non-aqueous organic solvent; a lithium salt; and an additive, wherein the additive includes a compound represented by Chemical Formula 1: wherein, in Chemical Formula 1, R is a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C2 to C10 alkenyl group, a substituted or unsubstituted C2 to C10 alkynyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, a substituted or unsubstituted C3 to C10 cycloalkenyl group, or a substituted or unsubstituted C6 to C20 aryl group, and n is an integer of 1 to 3.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 4, 2021
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Olga Tsay, Pavel Shatunov, Hyejin Park, Myungheui Woo, Harim Lee, Jin-Hyeok Lim, Hyunbong Choi
  • Patent number: 10957898
    Abstract: Electrolytes and electrolyte additives for energy storage devices comprising an anhydride compound are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive selected from an anhydride compound.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: March 23, 2021
    Assignee: Enevate Corporation
    Inventors: Liwen Ji, Benjamin Yong Park
  • Patent number: 10923706
    Abstract: In manufacturing a storage battery electrode, a method for manufacturing a storage battery electrode with high capacity and stability is provided. As a method for preventing a mixture for forming an active material layer from becoming strongly basic, a first aqueous solution is formed by mixing an active material exhibiting basicity with an aqueous solution exhibiting acidity and including an oxidized derivative of a first conductive additive; a first mixture is formed by reducing the oxidized derivative of the first conductive additive by drying the first aqueous solution; a second mixture is formed by mixing a second conductive additive and a binder; a third mixture is formed by mixing the first mixture and the second mixture; and a current collector is coated with the third mixture. The strong basicity of the mixture for forming an active material layer is lowered; thus, the binder can be prevented from becoming gelled.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: February 16, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Kawakami, Yohei Momma, Teruaki Ochiai, Tatsuya Ikenuma
  • Patent number: 10892110
    Abstract: An electrolyte solution for electrochemical device contains: an electrolyte solution comprising a cyclic carbonate solvent containing 1.0 mol/L to 1.6 mol/L of LiPF6 as an electrolyte; an oxalate complex salt of lithium whose additive quantity relative to the electrolyte solution accounts for 1.0 percent by weight to 3.0 percent by weight; and a straight-chain carbonate whose additive quantity relative to the electrolyte solution accounts for 1.0 percent by weight to 9.0 percent by weight.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: January 12, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Takeo Tsuzuki
  • Patent number: 10868294
    Abstract: A positive electrode for a lithium secondary battery includes a positive electrode current collector, a positive electrode active material layer, and a primer layer formed between the positive electrode current collector and the positive electrode active material layer. The primer layer includes lithium carbonate (Li2CO3) particles having two or more different particle diameters, a binder polymer, and a conductive material. The lithium secondary battery attains the overcharge cutoff voltage rapidly by virtue of the gas generated between the positive electrode current collector and the positive electrode active material layer, in an overcharged state. Thus, it is possible to ensure the safety of the lithium secondary battery.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: December 15, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyung-Min Kim, Jung-Seok Choi, Song-Taek Oh
  • Patent number: 10868334
    Abstract: This application provides an electrolyte and an electrochemical device, in which the electrolyte comprises an additive A and an additive B, wherein the additive A is present in an amount of 0.001% to 10% by mass in the electrolyte and the additive B is present in an amount of 0.1% to 10% by mass in the electrolyte and the electrolyte has a conductivity of 4 mS/cm to 12 mS/cm at 25° C. The present invention can improve the cycle performance and storage performance of the electrochemical device, in particular, improve the cycle performance and storage performance of the electrochemical device under high temperature and high voltage conditions while keeping the low temperature performance.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 15, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Tiancheng Yi, Chunhua Hu, Zijun Xu, Lu Miao, Chengdu Liang
  • Patent number: 10847782
    Abstract: Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 ?m or less, or the silicon-based domains are not at all agglomerated into agglomerates.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: November 24, 2020
    Assignee: Umicore
    Inventors: Stijn Put, Dirk Van Genechten, Jan Gilleir, Nicolas Marx
  • Patent number: 10847806
    Abstract: An electrochemical device including a positive electrode current collector; a first protruding portion including a plurality of positive electrodes in electrical contact with the positive electrode current collector, and a first dented portion disposed between each positive electrode of the plurality of positive electrodes; an electrolyte layer including a second protruding portion and a second dented portion respectively disposed on the first protruding portion including the plurality of positive electrodes and the first dented portion disposed between each positive electrode of the plurality of positive electrodes; and a negative electrode current collector layer including a third protruding portion and a third dented portion respectively disposed on the second protruding portion and the second dented portion of the electrolyte layer.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: November 24, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hojung Yang, Kyounghwan Kim, Hwiyeol Park, Jin S. Heo, Sungjin Lim, Huisu Jeong
  • Patent number: 10826111
    Abstract: This disclosure relates to semi-solid electrodes which are pre-formed prior to inclusion in lithium ion batteries, lithium ion batteries which incorporate the semi-solid electrodes and methods of making the semi-solid electrodes. An electrochemical cell includes a semi-solid anode formed of anode active material injected with an electrolyte and a first electrolyte additive, the semi-solid anode having a first SEI layer; and a semi-solid cathode formed of a cathode active material injected with an additional electrolyte and a second electrolyte additive, the semi-solid cathode having a second SEI layer, wherein the first electrolyte additive and the second solid electrolyte additive are different.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: November 3, 2020
    Assignee: Gotion, Inc.
    Inventors: Qian Cheng, Steven Cai
  • Patent number: 10811723
    Abstract: A secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolyte layer, and the electrolyte layer includes an electrolytic solution and a copolymer containing vinylidene fluoride, hexafluoropropylene, and a hetero-unsaturated compound.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: October 20, 2020
    Assignee: Murata Manufacturing Inc.
    Inventors: Kazumasa Takeshi, Aiko Nakamura, Shuhei Sugita, Hiroki Mita, Tadahiko Kubota
  • Patent number: 10790536
    Abstract: Described are electrolyte compositions and electrochemical devices containing the electrolyte compositions. The compositions include an organosilicon compound, an imide salt and optionally LiPF6. The electrolytes provide improved high-temperature performance and stability and will operate at temperatures as high as 250° C.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: September 29, 2020
    Assignee: Silatronix, Inc.
    Inventors: Tobias Johnson, Michael Pollina, Liu Zhou, Monica Usrey, Deborah Gilbert, Peng Du
  • Patent number: 10775240
    Abstract: Provided is a method for evaluating a secondary battery active material, comprising: preparing an active material including a core and a shell located on the surface of the core; forming an active material layer including the active material on at least one surface of a current collector; acquiring a Raman spectrum for the active material and calculating a Raman R value (ID/IG) therefrom; obtaining a frequency distribution chart for the Raman R value; obtaining a probability density function by normalizing the frequency distribution chart; and evaluating the shell of the active material by extracting a Raman R value (ID/IG) and/or a predetermined width indicating a maximum value from the graph of the probability density function.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: September 15, 2020
    Assignee: SK Innovation Co., Ltd.
    Inventors: Suk-Chin Lee, Hyo-Sang Kim, Jung-Hyun Yun
  • Patent number: 10717650
    Abstract: Disclosed is a method for purifying a difluorophosphate, the method including mixing a difluorophosphate containing an impurity with at least one treatment agent selected from the group consisting of carbonates, hydroxides, and halides of alkali metals or alkali earth metals and amines to isolate the impurity. It is preferable that the method further include filtering off, by filtration, a salt or a complex that has been formed by allowing the impurity to be mixed with the treatment agent. Preferably, a carbonate, a hydroxide, or a halide of an alkali metal is used as the treatment agent, and more preferably a carbonate, a hydroxide, or a halide of lithium is used as the treatment agent.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: July 21, 2020
    Assignee: KANTO DENKA KOGYO CO., LTD.
    Inventors: Hiroki Takizawa, Kazuhide Yoshiyama, Keisuke Kude, Wataru Kashikura, Takuro Abe, Mitsuhara Shimoda, Osamu Omae, Hiroyuki Uehara
  • Patent number: 10686222
    Abstract: A method for manufacturing a phosphate, which includes reacting, in a solvent, an organophosphate represented by the following formula (2) and an alkali metal hydroxide in an amount of 1.01 mole equivalents or more relative to the organophosphate to provide a composition containing a phosphate represented by the following formula (1), the alkali metal hydroxide, and the solvent; and adding hydrogen fluoride to the composition to neutralize the composition and to precipitate an alkali metal fluoride, thereby providing a composition containing the precipitated alkali metal fluoride, the phosphate represented by the formula (1), and the solvent. The formula (1) is (R11O)(R12O)PO2M, where R11, R12 and M are as defined herein. The formula (2) is (R21O)(R22O)(R23O)PO, where R21, R22, and R23 are as defined herein.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: June 16, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi Maruo, Shigeaki Yamazaki, Hideo Sakata, Shinichi Kinoshita
  • Patent number: 10686220
    Abstract: Electrolyte compositions comprising fluorinated acyclic carboxylic acid esters, fluorinated acyclic carbonates, and/or fluorinated acyclic ethers; co-solvents; and certain film-forming chemical compounds are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide the improved performance of a combination of high capacity and high cycle life.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: June 16, 2020
    Assignee: Solvay SA
    Inventors: Stephen E. Burkhardt, Xudong Chen, Charles J. Dubois, William L. Holstein, Kostantinos Kourtakis, Mark Gerrit Roelofs
  • Patent number: 10665898
    Abstract: The present disclosure provides an electrolyte liquid of a lithium sulfur battery comprising a carbonate ester organic solvent, a lithium salt, and a flame-retardant cosolvent, the flame-retardant cosolvent being a phosphazene compound, wherein a mass percentage of the flame-retardant cosolvent is 20% to 50%, a concentration of the lithium salt is 0.8 mol/L to 1.2 mol/L. The present disclosure also provides a lithium sulfur battery and a method for preparing the electrolyte liquid.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 26, 2020
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Zhen Liu, Yu-Ming Shang, Xiang-Ming He, Li Wang
  • Patent number: 10622638
    Abstract: An electrode for redox flow battery is disposed opposite a membrane of a redox flow battery. The electrode includes a fiber assembly including a plurality of carbon fibers. The fiber assembly includes soft carbon fibers with a Young's modulus of 200 GPa or less. An average carbon fiber diameter of the soft carbon fibers is preferably 20 ?m or less.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: April 14, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kei Hanafusa, Kenichi Ito, Takashi Kanno, Souichirou Okumura
  • Patent number: 10586988
    Abstract: In an electrode structural body, a coated film is obtained by applying an electrode mixture including an electrode active material, a first fluorine based polymer, and a solvent and drying the mixture, then formed on the surface of a current collector, the first fluorine based polymer has one or more side chains represented by the following Formula (1), and the coated film is subjected to heat treatment. —X—COOH??(1) (In Formula (1), X is an atomic group having a molecular weight of less than 500, the main chain of which is made up of 1 to 20 atoms).
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: March 10, 2020
    Assignee: KUREHA CORPORATION
    Inventors: Yuki Sakai, Emi Sugawara
  • Patent number: 10553910
    Abstract: A method of performing a formation process for a lithium-ion cell having an anode, a cathode, an electrolyte and a separator, the formation process including adding an additive to the electrolyte for improving a solid electrolyte interface build-up on the anode, performing a first charge of the cell at a first predetermined rate, performing a cycle of discharging/charging the cell at the first predetermined rate, repeating the cycle until a cycle maximum dQ/dV peak value is smaller than or equal to a predetermined dQ/dV value during charging of the cell and charging the cell to a fully charged capacity at a second predetermine rate, the second predetermined rate being greater than the first predetermined rate.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: February 4, 2020
    Assignees: TOYOTA MOTOR EUROPE, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Sakurai, Tomohide Sumi, Yoshio Matsuyama
  • Patent number: 10530013
    Abstract: A method of manufacturing a non-aqueous electrolyte secondary battery includes: (A) constructing an electrode group including a positive electrode and a negative electrode; (B) impregnating the electrode group with a first electrolyte solution; (C) charging the electrode group impregnated with the first electrolyte solution to a voltage of 4.3 V or more; and (E) manufacturing the non-aqueous electrolyte secondary battery by impregnating the electrode group with a second electrolyte solution after the charging. The first electrolyte solution includes a first solvent, a first lithium salt, and biphenyl. The first solvent does not include 1,2-dimethoxyethane. The second electrolyte solution includes a second solvent and a second lithium salt. The second solvent includes 1,2-dimethoxyethane.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: January 7, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Iguchi, Hideaki Fujita
  • Patent number: 10454137
    Abstract: Provided are a non-aqueous electrolyte solution, which includes (i) a first lithium salt, (ii) lithium bis(fluorosulfonyl)imide as a second lithium salt, (iii) a phosphazene-based compound as a first additive, and (iv) a non-aqueous organic solvent, and a lithium secondary battery including the non-aqueous electrolyte solution. With respect to a lithium secondary battery including the non-aqueous electrolyte solution of the present invention, since a robust solid electrolyte interface (SEI) may be formed on the surface of a negative electrode during initial charge and flame retardancy in a high-temperature environment may be provided to prevent the decomposition of the surface of a positive electrode and an oxidation reaction of the electrolyte solution, output characteristics and capacity characteristics after high-temperature storage as well as output characteristics may be improved.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 22, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee
  • Patent number: 10411302
    Abstract: A lithium secondary battery includes: a negative electrode, a positive electrode, and an electrolyte disposed between the negative electrode and the positive electrode, wherein the negative electrode includes a silicon composite including silicon, a silicon oxide of the formula SiOx wherein 0<x<2 and disposed on the silicon, and a graphene disposed on the silicon oxide; or a carbonaceous composite including the silicon composite and a carbonaceous material, which is different from the graphene, and wherein at least one of the negative electrode and the electrolyte includes an ionic liquid containing a fluorosulfonyl imide anion, and a lithium salt.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 10, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jonghwan Park, Junhyuk Moon, Inhyuk Son, Jaeman Choi
  • Patent number: 10396399
    Abstract: An electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution contains a solvent, an electrolyte salt, and a phosphate in an amount of 0.001 to 15 mass % relative to the solvent and represented by the formula (1): (R11O)(R12O)PO2M, where R11, R12 and M are as defined herein.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: August 27, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi Maruo, Shigeaki Yamazaki, Hideo Sakata, Shinichi Kinoshita
  • Patent number: 10381685
    Abstract: The present disclosure provides a non-aqueous liquid electrolyte comprising a non-aqueous organic solvent, a lithium salt, and an additive that is an isocyanate-based compound comprising a carbon-carbon triple bond. By comprising the isocyanate-based compound additive comprising a carbon-carbon triple bond of the present disclosure in the non-aqueous liquid electrolyte, lifespan properties and high temperature durability are capable of being enhanced, and internal resistance of a battery is capable of being reduced.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 13, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Sol Ji Park, Chul Haeng Lee, Jeong Woo Oh
  • Patent number: 10355312
    Abstract: The present invention provides an electrolyte solution that is capable of dealing with an increased voltage of an electrochemical device, as well as capable of improving the high-temperature storage characteristics and cycle characteristics of the electrochemical device, and an electrochemical device. The electrolyte solution includes a solvent containing a fluorinated saturated cyclic carbonate and a fluorinated acyclic carbonate; at least one sulfur-containing compound selected from the group consisting of compounds having a —SO2— bond, compounds having a —SO3— bond, and compounds having a —SO4— bond, and an electrolyte salt. The fluorinated acyclic carbonate has a fluorine content of 31.0 to 70.0 mass %.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 16, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hiroyuki Arima, Hideo Sakata, Shigeaki Yamazaki, Shinichi Kinoshita
  • Patent number: 10340497
    Abstract: A secondary battery comprises a cell. The cell includes a positive electrode plate having a positive current collector and a negative electrode plate having a negative current collector. The secondary battery further includes: a first positive electrode tab and a second positive electrode tab, one end of the first positive electrode tab is fixed on and electrically connects with the positive current collector, the other end of the first positive electrode tab extends to the outside of the cell; and/or, a first negative electrode tab and a second negative electrode tab, one end of the first negative electrode tab is fixed on and electrically connects with the negative current collector, the other end of the first negative electrode tab extends to the outside of the cell, one end of the second negative electrode tab is fixed on and electrically connects with the other end of the first negative electrode tab.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 2, 2019
    Assignee: NINGDE AMPEREX TECHNOLOGY LIMITED
    Inventors: Baojian Zhu, Hong Yang, Qiao Zeng, Jiacai Cai, Shoujiang Xu
  • Patent number: 10340522
    Abstract: A binder composition for a lithium secondary battery, an electrode, and a lithium secondary battery, the binder composition including an interpenetrating network structure that includes a cyclic polymer, the cyclic polymer including a repeating unit represented by Formula 1 or a repeating unit represented by Formula 2; and a copolymer, the copolymer including a repeating unit represented by Formula 3 and a repeating unit represented by Formula 4, wherein an amount of the repeating unit represented by Formula 3 is about 40 mol % to about 70 mol %, based on a total amount of the copolymer:
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: July 2, 2019
    Assignees: SAMSUNG SDI CO., LTD., Aekyung Chemical Co., Ltd.
    Inventors: Soonsung Suh, Seunguk Kwon, Jaehyuk Kim, Namseon Kim, Soojung Kim, Kwangshik Choi
  • Patent number: 10276871
    Abstract: A rechargeable lithium battery includes a negative electrode including a negative active material including a silicon-based material and a carbon-based material; and an electrolyte solution, wherein the negative electrode further includes greater than or equal to about 0.01 parts by weight and less than or equal to about 1 part by weight of a compound represented by Chemical Formula 1, based on 100 parts by weight of the negative active material, and at least one, selected from the electrolyte solution and the negative electrode, includes greater than or equal to about 0.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: April 30, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hokuto Yokotsuji, Hironari Takase
  • Patent number: 10263287
    Abstract: Provided are a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the electrolyte salt including at least one first lithium salt selected from LiPF6, LiBF4, LiN(SO2F)2, LiN(SO2CF3)2, and LiN(SO2C2F5)2, and at least one second lithium salt selected from a lithium salt having an oxalate structure, a lithium salt having a phosphate structure, and a lithium salt having an S?O group, with a sum total of the first lithium salt and the second lithium salt being four or more, and an energy storage device using the same. This nonaqueous electrolytic solution is not only able to improve electrochemical characteristics at a high temperature and much more improve a discharge capacity retention rate and low-temperature output characteristics after a high-temperature storage test but also able to improve low-temperature input characteristics even for high-density electrodes.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: April 16, 2019
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Koji Abe, Kei Shimamoto
  • Patent number: 10247783
    Abstract: Systems and methods for sensing internal states of vehicle batteries are described. From this internal state information, various physical characteristics of the battery can be measured, calculated or inferred. A vehicle can include an electric motor, a battery to store electrical energy for the electric motor, and a sensor connected to the battery to sense a battery state, to receive an input signal, and to wirelessly transmit an output signal indicating the battery state. The vehicle can also include control circuitry to receive the output signal and to control the electric motor and the battery. In examples, the battery may have a physical property that changes based on a state of the battery. This physical property may be measured by the sensor. The sensor may be passive and built into the structure of the battery. The sensor can be a magnetic field sensor or a surface wave acoustic sensor.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: April 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Arnold Kweku Mensah-Brown
  • Patent number: 10190225
    Abstract: The present disclosure relates to a copper foil that exhibits surprising low repulsive force characteristics; and to methods for manufacturing such copper foils. Typically, the copper foil has (a) a lightness L* value of the nodule untreated side, based on the L*a*b color system, in the range of 75 to 90 and (b) a normal tensile strength in the range of 40 kgf/mm2 to 55 kgf/mm2. The disclosure further relates to flexible printed circuit boards and electronic devices using the above-mentioned copper foils for forming conductive lines therein.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: January 29, 2019
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Yao-Sheng Lai, Kuei-Seng Cheng, Jian-Ming Huang
  • Patent number: 10164272
    Abstract: A pinhole determination method for a fuel cell includes steps of blocking air supply to a fuel cell stack by a controller; measuring a cell voltage value of each of unit fuel cells of the fuel cell stack; and determining whether or not a pinhole is present by comparing the cell voltage value with an average cell voltage value.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: December 25, 2018
    Assignee: Hyundai Motor Company
    Inventors: Jung Hwan Ryu, Soon Woo Kwon
  • Patent number: 10096834
    Abstract: A method is provided for manufacturing a polyacrylonitrile-sulfur composite material, the polyacrylonitrile-sulfur composite material having an sp2 hybrid proportion, with respect to the total carbon atoms included in the composite material, of greater than or equal to 85% including the method steps: a) reaction of polyacrylonitrile with sulfur at a temperature of greater than or equal to 450° C., in particular greater than or equal to 550° C.; b) immediate purification of the product obtained in method step a); and c) drying the purified product, if necessary. A composite material manufactured in this way may be used in particular in an active material of a cathode of a lithium-ion battery and offers a particularly high rate capacity. In addition, methods are provided for manufacturing an active material for an electrode, a polyacrylonitrile-sulfur composite material and an energy store.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: October 9, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Martin Tenzer, Malte Rolff, Jean Fanous
  • Patent number: 10090561
    Abstract: In a nonaqueous electrolyte secondary battery including a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a nonaqueous electrolyte containing a lithium salt in a nonaqueous solvent, and a separator disposed between the positive electrode and the negative electrode, an inorganic particle layer is disposed between the positive electrode and the separator, and the nonaqueous solvent contains a chain fluorinated carboxylate ester represented by the formula CH3-XFX—CH2—COO—CH3 (where, x is an integer of 1 to 3) in an amount of 15% by volume or more based on the total amount of the nonaqueous solvent.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: October 2, 2018
    Assignee: PANASONIC CORPORATION
    Inventor: Takanobu Chiga
  • Patent number: 10081875
    Abstract: The present disclosure relates to a copper foil that exhibits surprising low repulsive force characteristics; and to methods for manufacturing such copper foils. Typically, the copper foil has (a) a lightness L* value of the nodule untreated side, based on the L*a*b color system, in the range of 75 to 90 and (b) a normal tensile strength in the range of 40 kgf/mm2 to 55 kgf/mm2. The disclosure further relates to flexible printed circuit boards and electronic devices using the above-mentioned copper foils for forming conductive lines therein.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: September 25, 2018
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Yao-Sheng Lai, Kuei-Seng Cheng, Jian-Ming Huang
  • Patent number: 10079116
    Abstract: Disclosed is an aluminum ion capacitor, including a separator, an anode and a cathode, between which the separator is interposed, and an electrolyte contacting the anode and the cathode, wherein the anode contains aluminum, the electrolyte contains aluminum ions, and an electrical double layer is formed at the cathode and intercalation and deintercalation of aluminum ions are performed at the anode. Accordingly, a supercapacitor having increased energy density can be effectively manufactured at lower cost than lithium ion capacitors, and also, the supercapacitor has high material stability and thus is not limited as to electrode configuration, and an electrode configuration that has a low manufacturing cost and is able to increase energy density and power density can be adopted.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: September 18, 2018
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Jung-joon Yoo, Chan-woo Lee, Yong-il Kim, Hae Soo Lee
  • Patent number: 10050255
    Abstract: A rechargeable battery and a method of manufacturing the same, the battery including an electrode assembly, the electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; and a case accommodating the electrode assembly, wherein each of the first and second electrodes includes a coated region having an active material layer on a current collector and an uncoated region free of the active material layer, and in at least one electrode of the first and second electrodes, the current collector is characterized by an x-ray diffraction pattern in which a ratio of an intensity of a largest peak: an intensity of a second largest peak of the current collector in the uncoated region is greater than a ratio of an intensity of a largest peak: an intensity of a second largest peak of the current collector in the coated region.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: August 14, 2018
    Assignees: SAMSUNG SDI CO., LTD., ROBERT BOSCH GmbH
    Inventor: Dong-Ho Jeong
  • Patent number: 9991519
    Abstract: An object of the present invention is to provide an electrolytic aluminum foil having no significant difference in properties between one surface and the other surface thereof, and also a method for producing the same. Another object is to provide a current collector for an electrical storage device using the electrolytic aluminum foil, an electrode for an electrical storage device, and an electrical storage device. An electrolytic aluminum foil of the present invention as a means for achieving the object is characterized in that both surfaces of the foil have L* values of 86.00 or more in the L*a*b* color space (SCI method).
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: June 5, 2018
    Assignee: HITACHI METALS, LTD.
    Inventors: Atsushi Okamoto, Junichi Matsuda
  • Patent number: 9985238
    Abstract: Provided is an electrolytic copper foil significantly useful as electrodes for electronic devices. The electrolytic copper foil used for an electronic device according to the present invention includes copper or copper alloy, the electrolytic copper foil having a 0.2% proof stress of 250 N/mm2 or more after heat treatment at 200° C. for 60 min in a nitrogen atmosphere, wherein at least one of the surfaces of the electrolytic copper foil has a concave-dominant surface profile having a Pv/Pp ratio of 1.2 or more, the Pv/Pp ratio being a ratio of a maximum profile valley depth Pv to a maximum profile peak height Pp as determined in a rectangular area of 181 ?m by 136 ?m in accordance with JIS B 0601-2001.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: May 29, 2018
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventor: Yoshinori Matsuura
  • Patent number: 9954230
    Abstract: A current collector for a lithium ion secondary battery, on which an electrode mixture layer is formed, satisfies A?0.10 ?m and 6?(B/A)?15 when assuming that a three-dimensional center plane average roughness SRa of a surface of at least one side of the current collector on which the electrode mixture layer is formed is A and a ratio of an actual surface area of the surface of at least one side of the current collector to a geometric area of the surface of at least one side of the current collector, which is (actual surface area)/(geometric area), is B.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: April 24, 2018
    Assignee: HITACHI METALS, LTD.
    Inventors: Tatsuya Toyama, Shin Takahashi, Atsushi Okamoto
  • Patent number: 9929409
    Abstract: The present invention relates to a battery having an electrode structure using metal fiber and a preparation method of an electrode structure. A preparation method of an electrode structure, according to one embodiment of the present invention, includes a step for providing one or more metal fibers forming a conductive network; a step for providing particle compositions including electrical active materials of a particle shape; a step for mixing the metal fibers and the particle compositions; and a step for compressing the mixed metal fibers and the particle compositions.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: March 27, 2018
    Assignee: JENAX INC.
    Inventors: Chang Hyeon Kim, Lee Hyun Shin, Chul Hwan Kim
  • Patent number: 9905849
    Abstract: Disclosed are an electrode assembly including a cathode, an anode, and a separator disposed between the cathode and the anode wherein the anode includes lithium titanium oxide (LTO) as an anode active material and the separator is a non-woven separator, and a lithium secondary battery including the same.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: February 27, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Daehong Kim, Youn Kyoung Lee, Soo Hyun Lim, Tae Jin Park
  • Patent number: 9893381
    Abstract: Provided are a nonaqueous electrolyte for secondary batteries containing an electrolyte having high solubility in ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, or a like solvent and capable of forming a good-quality film on the positive and the negative electrode interface and a nonaqueous secondary battery having the nonaqueous electrolyte. Specifically, an electrolyte for secondary batteries containing a lithium salt as a solute and a nonaqueous solvent is provided, the nonaqueous solvent containing a monofluorophosphoric ester salt having general formula 1 or 2, in which symbols are as defined in the description.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: February 13, 2018
    Assignee: KANTO DENKA KOGYO CO., LTD.
    Inventors: Takuro Abe, Osamu Omae
  • Patent number: 9887435
    Abstract: The invention relates to an electrochemical cell for a lithium-ion battery comprising: a negative electrode comprising as an active material silicon; a positive electrode; and an electrolyte positioned between said negative electrode and said positive electrode, said electrolyte comprising at least one lithium salt, at least one carbonate solvent, at least one mononitrile compound and at least one compound fitting at least one of the following formulae (I) and (II): wherein R1 and R2 represent, independently of each other, H, Cl or F, provided that R1 and R2 do not both represent H.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 6, 2018
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Jean-Frederic Martin, Laura Boutafa
  • Patent number: 9847528
    Abstract: A predoping material is used for an alkali metal ion electric storage device and is represented by Formula (1): RSM)n??(1) where M represents lithium or sodium; n represents an integer of 2 to 6; and R represents an aliphatic hydrocarbon, optionally substituted aromatic hydrocarbon, or optionally substituted heterocycle having 1 to 10 carbon atoms).
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: December 19, 2017
    Assignee: SUBARU CORPORATION
    Inventors: Yasuyuki Kiya, Takahito Sakuraba, Satoru Kudo, Ken Baba
  • Patent number: 9831529
    Abstract: A lithium metal battery including: a lithium negative electrode including lithium metal; a positive electrode; and an electrolyte interposed between the lithium negative electrode and the positive electrode, wherein the electrolyte contains non-fluorine substituted ether, which is capable of solvating lithium ions, a fluorine substituted ether represented by the following Formula 1, and a lithium salt, wherein an amount of the fluorine substituted ether represented by Formula 1 is greater than an amount of the non-fluorine substituted ether, R—{O(CH2)a}b—CH2—O—CnF2nH??Formula 1 wherein R is —CmF2mH or —CmF2m+1, n is an integer of 2 or greater, m is an integer of 1 or greater, a is an integer of 1 or 2, and b is 0 or 1.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: November 28, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wonseok Chang, Tomonobu Mizumo, Toshinori Sugimoto, Hyorang Kang, Joungwon Park, Yonggun Lee, Hongsoo Choi, Hosang Park