公开(公告)号：US12119439B2

公开(公告)日：2024-10-15

申请号：US16764212

申请日：2018-11-22

Applicant: GS Yuasa International Ltd.

Inventor： Yudai Kawasoe ,  Kenta Nagamine

IPC: H01M10/0525 ,  H01M10/0563 ,  H01M50/103

CPC classification number: H01M10/0525 ,  H01M10/0563 ,  H01M50/103 ,  H01M2220/20 ,  H01M2300/002

Abstract: One aspect of the present invention is an energy storage device including: an electrode assembly including a negative electrode and a positive electrode that are stacked on each other with a separator interposed therebetween; a nonaqueous electrolyte containing a nonaqueous solvent; and a flat outer case housing the electrode assembly and the nonaqueous electrolyte, wherein the electrode assembly is disposed in the outer case in a compressed state so that the electrode assembly is pressurized in a direction of stack, a surface pressure acting on the outer case in the direction of stack is 1 k Pa or more, the nonaqueous solvent contains a fluorinated cyclic carbonate, and the nonaqueous electrolyte has an electric conductivity at 25° C. of 0.75 S/m or more.

公开(公告)号：US11764403B2

公开(公告)日：2023-09-19

申请号：US16754784

申请日：2018-10-15

Applicant: GS Yuasa International Ltd.

Inventor： Yudai Kawasoe ,  Kenta Nagamine ,  Keisuke Anami

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0568 ,  H01M4/13 ,  H01M4/02

CPC classification number: H01M10/0569 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0568 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0034

Abstract: A nonaqueous electrolyte secondary battery disclosed herein includes a positive electrode plate including a positive composite layer, a negative electrode plate including a negative composite layer, and a nonaqueous electrolyte, in which the negative composite layer is composed of a facing portion facing a surface of the positive composite layer, and a non-facing portion that is on the same surface as the facing portion and does not face the surface of the positive composite layer, and the area ratio of the non-facing portion to a combined area of the facing portion and the non-facing portion of the negative composite layer is 7% or more, and the nonaqueous electrolyte contains a fluorinated carbonate and a cyclic sulfone compound.

公开(公告)号：US20150280282A1

公开(公告)日：2015-10-01

申请号：US14438060

申请日：2013-03-18

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Katsushi Nishie ,  Yudai Kawasoe ,  Takeshi Hachida

IPC: H01M10/0567 ,  H01M10/058 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/525

CPC classification number: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0025 ,  Y10T29/49108

Abstract: A nonaqueous electrolyte secondary battery including a positive electrode having a particulate positive active material, and an electrolyte, wherein the positive active material contains a nickel-containing lithium transition metal oxide and has an average particle size of 3 to 15 μm, and the electrolyte contains a cyclic sulfate compound having a specific structure.

Abstract translation: 一种非水电解质二次电池，其包含具有正极活性物质的正极和电解质，所述正极活性物质含有含镍的锂过渡金属氧化物，其平均粒径为3〜15μm，所述电解质含有 具有特定结构的环状硫酸盐化合物。

公开(公告)号：US20150229002A1

公开(公告)日：2015-08-13

申请号：US14426025

申请日：2013-09-02

Applicant: GS Yuasa International Ltd.

Inventor： Yudai Kawasoe ,  Katsushi Nishie ,  Takeshi Hachida

IPC: H01M10/0567

CPC classification number: H01M10/0567 ,  H01M10/052 ,  H01M2220/30 ,  H01M2300/0025 ,  H01M2300/004 ,  Y02T10/7011

Abstract: Provided is a nonaqueous electrolyte secondary battery comprising a nonaqueous electrolyte. A lithium phosphate compound and a cyclic sulfone compound are contained in the nonaqueous electrolyte. The lithium phosphate compound is contained in an amount greater than 0% by mass and less than or equal to 4.0% by mass relative to the whole mass of the nonaqueous electrolyte. The cyclic sulfone compound is contained in an amount greater than 0% by mass and less than or equal to 3.0% by mass relative to the whole mass of the nonaqueous electrolyte. The lithium phosphate compound comprises lithium difluoro(bisoxalato) phosphate and lithium tetrafluoro(oxalato) phosphate.

Abstract translation: 提供一种包含非水电解质的非水电解质二次电池。 非水电解质中含有磷酸锂化合物和环状砜化合物。 相对于非水电解质的总质量，磷酸锂化合物的含量大于0质量％且小于等于4.0质量％。 相对于非水电解质的总质量，环状砜化合物的含量大于0质量％且小于等于3.0质量％。 磷酸锂化合物包括磷酸二氢（二
氧钒）磷酸锂和四氟（草酸）磷酸锂。

公开(公告)号：US20140212747A1

公开(公告)日：2014-07-31

申请号：US14348970

申请日：2012-10-10

Applicant: GS Yuasa International Ltd.

Inventor： Katsushi Nishie ,  Yudai Kawasoe

IPC: H01M10/0567 ,  H01M10/04 ,  H01M10/0525

CPC classification number: H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0567 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49108

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode includes LixMnaNibCOcMdO2 (0

Abstract translation: 非水电解质二次电池包括正极，负极和非水电解质。 正极包括LixMnaNibCOcMdO2（0