公开(公告)号：US20190305306A1

公开(公告)日：2019-10-03

申请号：US16335609

申请日：2017-09-25

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Masahiro OISHI ,  Haruna KATO ,  Taisuke MASUKO ,  Tomohiro YANO

IPC: H01M4/36 ,  H01M4/131 ,  H01M10/0562 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525

Abstract: An all-solid lithium ion secondary battery includes a pair of electrodes and a solid electrolyte provided between the pair of electrodes. At least one of the pair of electrodes includes an active-material layer and an intermediate layer. An active material constituting the active-material layer has a core-shell structure which has a core region and a shell region and a composition of the intermediate layer is intermediate between the solid electrolyte and the shell region.

公开(公告)号：US20190207254A1

公开(公告)日：2019-07-04

申请号：US16333039

申请日：2017-09-25

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Masahiro OISHI ,  Haruna KATO

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M10/0562 ,  H01B1/06 ,  H01B1/08 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021

Abstract: An active material according to one aspect of the present invention includes a core region; and a shell region, in which an amount of transition metals in the core region is more than an amount of transition metals in the shell region, and an amount of oxygen deficiency in the shell region is more than an amount of oxygen deficiency in the core region.

公开(公告)号：US20240162480A1

公开(公告)日：2024-05-16

申请号：US18283968

申请日：2022-03-28

Applicant: TDK CORPORATION

Inventor： Haruna KATO ,  Hisashi SUZUKI ,  Tetsuya UENO ,  Chieko SHIMIZU

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/008

Abstract: A solid electrolyte material has a pair of surfaces which face each other and includes at least one of a predetermined halide-based solid electrolyte or a predetermined sulfide-based solid electrolyte, in which a surface ten-point average roughness RzJIS of at least one of the pair of surfaces falls in the range from 20 nm or more and 1500 nm or less.

公开(公告)号：US20220294010A1

公开(公告)日：2022-09-15

申请号：US17641531

申请日：2020-08-31

Applicant: TDK CORPORATION

Inventor： Gakuho ISOMICHI ,  Haruna KATO ,  Tetsuya UENO

IPC: H01M10/0562 ,  C04B35/447 ,  C04B35/64

Abstract: A solid electrolyte layer includes a solid electrolyte and a compound represented by a composition formula MxZr2(PO4)y. In the composition formula, M represents at least one selected from the group consisting of Na, K, Mg, Ca, Sr, Ba, Cu, Zn, and Ni, x satisfies 0