公开(公告)号：US10777841B2

公开(公告)日：2020-09-15

申请号：US16014273

申请日：2018-06-21

申请人： Mitsutoshi Otaki ,  Norihiro Ose ,  Shigenori Hama ,  Kazuyuki Taniguchi ,  Yoshiyasu Yamada ,  Tetsuo Nakanishi

发明人： Mitsutoshi Otaki ,  Norihiro Ose ,  Shigenori Hama ,  Kazuyuki Taniguchi ,  Yoshiyasu Yamada ,  Tetsuo Nakanishi

IPC分类号： H01M10/0525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M4/136 ,  H01M10/0562 ,  H01M2/16 ,  H01M10/052 ,  H01M4/02

摘要： Disclosed is an all-solid-state lithium ion secondary battery excellent in cycle characteristics. The battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein, for the anode active material particles, a value A obtained by the following formula (1) is 6.1 or more and 54.8 or less: A=SBET×dmed×D  Formula (1) where SBET is a BET specific surface area (m2/g) of the anode active material particles; dmed is a median diameter D50 (μm) of the anode active material particles; and D is a density (g/cm3) of the anode active material particles.

公开(公告)号：US20190013542A1

公开(公告)日：2019-01-10

申请号：US16014273

申请日：2018-06-21

申请人： Mitsutoshi OTAKI ,  Norihiro OSE ,  Shigenori HAMA ,  Kazuyuki TANIGUCHI ,  Yoshiyasu YAMADA ,  Tetsuo NAKANISHI

发明人： Mitsutoshi OTAKI ,  Norihiro OSE ,  Shigenori HAMA ,  Kazuyuki TANIGUCHI ,  Yoshiyasu YAMADA ,  Tetsuo NAKANISHI

IPC分类号： H01M10/0525 ,  H01M4/36 ,  H01M4/136 ,  H01M4/38 ,  H01M4/62

摘要： Disclosed is an all-solid-state lithium ion secondary battery excellent in cycle characteristics. The battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein, for the anode active material particles, a value A obtained by the following formula (1) is 6.1 or more and 54.8 or less: A=SBET×dmed×D  Formula (1) where SBET is a BET specific surface area (m2/g) of the anode active material particles; dmed is a median diameter D50 (μm) of the anode active material particles; and D is a density (g/cm3) of the anode active material particles.

公开(公告)号：US20190013541A1

公开(公告)日：2019-01-10

申请号：US16007621

申请日：2018-06-13

申请人： Mitsutoshi OTAKI ,  Norihiro OSE ,  Shigenori HAMA ,  Kazuyuki TANIGUCHI ,  Yoshiyasu YAMADA ,  Tetsuo NAKANISHI

发明人： Mitsutoshi OTAKI ,  Norihiro OSE ,  Shigenori HAMA ,  Kazuyuki TANIGUCHI ,  Yoshiyasu YAMADA ,  Tetsuo NAKANISHI

IPC分类号： H01M10/0525 ,  H01M10/0562 ,  H01M4/38 ,  H01M4/40 ,  H01M4/66 ,  H01M4/62

摘要： Disclosed is an all-solid-state lithium ion secondary battery excellent in cycle characteristics. The battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein a BET specific surface area of the anode active material particles is 1.9 m2/g or more and 14.2 m2/g or less.

公开(公告)号：US20230402589A1

公开(公告)日：2023-12-14

申请号：US17806351

申请日：2022-06-10

申请人： Shigenori HAMA ,  Keisuke OMORI ,  Mitsutoshi OTAKI ,  Donghai WANG ,  Atif S. ALZAHRANI ,  Daiwei WANG

发明人： Shigenori HAMA ,  Keisuke OMORI ,  Mitsutoshi OTAKI ,  Donghai WANG ,  Atif S. ALZAHRANI ,  Daiwei WANG

IPC分类号： H01M4/38 ,  H01M10/36

CPC分类号： H01M4/38 ,  H01M10/36 ,  H01M2004/028

摘要： To provide a cathode mixture configured to increase the discharge capacity of a lithium secondary battery. The cathode mixture is a cathode mixture for lithium secondary batteries, comprising: a cathode active material containing an S element, and diphenyl disulfide as an additive, wherein a content of the diphenyl disulfide in the cathode mixture is less than 13.0 mass % of a total mass (100 mass %) of the cathode mixture.