公开(公告)号：US20170125811A1

公开(公告)日：2017-05-04

申请号：US15409242

申请日：2017-01-18

申请人： KUREHA CORPORATION ,  KURARAY CO., LTD. ,  KURARAY CHEMICAL CO., LTD.

发明人： Makoto IMAJI ,  Kenta AOKI ,  Yasuhiro TADA ,  Naohiro SONOBE ,  Junichi ARIMA ,  Kenichi KOYAKUMARU ,  Hideharu IWASAKI ,  Kiyoto OTSUKA ,  Jiro MASUKO ,  Hajime KOMATSU ,  Shinya TAGO

IPC分类号： H01M4/587 ,  H01M10/0525

CPC分类号： H01M4/587 ,  C01B32/05 ,  C01P2002/72 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/583 ,  H01M10/05 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

摘要： The object of the present invention is to provide a carbonaceous material which is obtainable from plant-derived char and has a decreased specific surface area. Further, the object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent dedoping capacity, non-dedoping capacity, and charge-discharge efficiency. The object can be solved by a carbonaceous material for non-aqueous electrolyte secondary batteries characterized in that the carbonaceous material is obtained by heat-treating plant-derived char which is demineralized in gas-phase, and carbon precursor or volatile organic compound under a non-oxidizing gas atmosphere; and a specific surface area determined by a BET method is 10 m2/g or less.

公开(公告)号：US20160268590A1

公开(公告)日：2016-09-15

申请号：US15030258

申请日：2014-10-10

申请人： KURARAY CO., LTD. ,  KURARAY CHEMICAL CO., LTD. ,  KUREHA CORPORATION

发明人： Akira KOSHIMA ,  Taketoshi OKUNO ,  Kenichi KOYAKUMARU ,  Hideharu IWASAKI ,  Kenta AOKI ,  Makoto IMAJI ,  Yasuhiro TADA ,  Naohiro SONOBE

IPC分类号： H01M4/133 ,  H01M4/583 ,  H01M4/36 ,  H01M10/0525

CPC分类号： H01M4/133 ,  H01M4/366 ,  H01M4/583 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2220/30

摘要： Provided is a less hygroscopic carbonaceous material that is obtained from a plant-derived carbonaceous raw material and that, when used as a negative electrode material for a nonaqueous electrolyte secondary battery, allows the battery to exhibit good battery characteristics. Provided is a carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries. This carbonaceous material is a particulate carbonaceous material containing carbonaceous particles. The carbonaceous material has a BET specific surface area of 1 m2/g or more and less than 20 m2/g. Each of the carbonaceous particles of the carbonaceous material has a core and a skin covering the core. The core contains a calcined product of a plant-derived carbonaceous raw material. The skin is made of a material that has higher electron emission ability upon irradiation with an electron beam than a material of the core.

摘要翻译： 提供从植物来源的碳质原料获得的吸湿性较小的碳质材料，并且当用作非水电解质二次电池的负极材料时，允许电池呈现良好的电池特性。 本发明提供一种非水电解质二次电池用负极碳质材料。 这种含碳材料是含碳质颗粒的颗粒状碳质材料。 碳质材料的BET比表面积为1m 2 / g以上且小于20m 2 / g。 碳质材料的每个碳质颗粒具有芯和覆盖芯的表皮。 核心包含植物来源的碳质原料的煅烧产物。 皮肤由在电子束照射时具有比芯的材料更高的电子发射能力的材料制成。

公开(公告)号：US20190326602A1

公开(公告)日：2019-10-24

申请号：US16348216

申请日：2017-11-09

申请人： Kureha Corporation

发明人： Kenta AOKI ,  Shoko AOKI ,  Shota KOBAYASHI ,  Yasuhiro TADA

IPC分类号： H01M4/62 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/36

摘要： To provide an electrode mixture that suppresses gelling of an electrode mixture slurry and maintains a high binding capacity between an electrode active material and a current collector even after an extended period of time has elapsed since an electrode mixture slurry was produced. The electrode mixture includes: a binder composition—containing a first copolymer of vinylidene fluoride and a polar group-containing compound; and a second copolymer of vinylidene fluoride and chlorotrifluoroethylene—; and an electrode active material of lithium oxide having a pH of water when extracted with water of not less than 10.5.

公开(公告)号：US20210047448A1

公开(公告)日：2021-02-18

申请号：US16966970

申请日：2018-10-29

申请人： KUREHA CORPORATION

发明人： Kenta AOKI ,  Shota KOBAYASHI ,  Kana ASHIDA

IPC分类号： C08F214/22 ,  H01M4/62 ,  H01M4/04 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/66

摘要： As a novel vinylidene fluoride polymer and its use, provided are a binder composition, an electrode mixture, an electrode, and a non-aqueous electrolyte secondary battery including the vinylidene fluoride containing the vinylidene fluoride polymer. The vinylidene fluoride polymer includes a first structural unit derived from vinylidene fluoride and a second structural unit derived from a monomer other than vinylidene fluoride. The monomer to be the second structural unit is a primary amine, a secondary amine, or a tertiary amine having at least one of a hydroxyl group and a carboxyl group, and the content of the second structural unit is from 0.05 to 20 mol % when the total of structural units derived from all the monomers constituting the vinylidene fluoride polymer is 100 mol %.

公开(公告)号：US20170141380A1

公开(公告)日：2017-05-18

申请号：US15300326

申请日：2015-03-31

申请人： Kureha Corporation

发明人： Kenta AOKI ,  Shota KOBAYASHI ,  Tatsuya YAGUCHI ,  Hiroshi IMOTO ,  Yasuhiro TADA ,  Naohiro SONOBE

IPC分类号： H01M4/133 ,  H01M4/587 ,  H01M10/0562 ,  H01M10/0525 ,  H01M10/0565

CPC分类号： H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0565 ,  H01M2004/027 ,  H01M2220/20 ,  Y02E60/122

摘要： An object of the present invention is to provide an all-solid battery having high energy density.The problem can be solved by a negative electrode for an all-solid battery comprising: a carbonaceous material having a true density of from 1.30 g/cm3 to 1.70 g/cm3 determined by a butanol method, a specific surface area of from 0.5 to 50.0 m2/g, an average particle size Dv50 of from 1 to 50 μm, and a combustion peak T (° C.) according to differential thermal analysis and a butanol true density ρBt (g/cm3) satisfying the following formula (1): 300≦T−100×ρBt≦570  (1) and a solid electrolyte.