公开(公告)号：US20250167293A1

公开(公告)日：2025-05-22

申请号：US18839482

申请日：2022-09-28

Applicant: TDK Corporation

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/02 ,  H01M4/36 ,  H01M4/38 ,  H01M4/485 ,  H01M4/525

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer disposed between the positive electrode and the negative electrode, the solid electrolyte contains a solid electrolyte having a γ-Li3PO4-type crystal structure, and the negative electrode has a layer containing a metal composed of Ag or a Li—Ag alloy and a compound represented by LiαTi5O12 (4≤α≤7).

公开(公告)号：US20220399568A1

公开(公告)日：2022-12-15

申请号：US17775624

申请日：2020-11-11

Applicant: TDK CORPORATION

Inventor： Tomoko NAKAMURA ,  Hisashi SUZUKI ,  Keiko TAKEUCHI

IPC: H01M10/0562 ,  H01M4/04

Abstract: A solid electrolyte layer having a solid electrolyte and carbon, in which a dispersion degree (CV value) of the carbon measured by a quadrat method in a cross section of the solid electrolyte layer is more than zero and less than one.

公开(公告)号：US20250167295A1

公开(公告)日：2025-05-22

申请号：US18841244

申请日：2022-09-28

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Yuusuke YAMAGUCHI ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/131 ,  H01M10/0525

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer that is between the positive electrode and the negative electrode, the positive electrode contains a compound having a spinel structure, the solid electrolyte layer contains a solid electrolyte having a γ-Li3PO4-type crystal structure, the compound having a spinel structure is represented by LiαMβMn2−βO4 . . . (1), and, in the formula (1), M is one or more atoms selected from transition metals, 0.8≤α≤1.2 is satisfied, and 0.1≤β≤0.9 is satisfied.

公开(公告)号：US20250167294A1

公开(公告)日：2025-05-22

申请号：US18841232

申请日：2022-09-28

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Yuusuke YAMAGUCHI ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/38

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer disposed between the positive electrode and the negative electrode, the solid electrolyte layer contains a solid electrolyte having a γ-Li3PO4-type crystal structure, and the negative electrode contains pure Ag or a Ag alloy and at least one compound of LiαTiO3 (2≤α≤2.8) and LiβTiSiO5 (2≤β≤4).

公开(公告)号：US20240313259A1

公开(公告)日：2024-09-19

申请号：US18272504

申请日：2022-02-10

Applicant: TDK CORPORATION

Inventor： Taisuke MASUKO ,  Tomoko NAKAMURA ,  Keiko TAKEUCHI

IPC: H01M10/0562 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M4/0407 ,  H01M10/0525 ,  H01M2300/0068

Abstract: A solid electrolyte layer contains a first compound represented by LiaM2(PO4)3 . . . (1) and a second compound represented by M′P2O7 . . . (2), and an abundance ratio of the second compound is 0.5 volume % or more and less than 10 volume %.