公开(公告)号：US20220344633A1

公开(公告)日：2022-10-27

申请号：US17854106

申请日：2022-06-30

Applicant: FDK CORPORATION

Inventor： Masakazu KOBAYASHI ,  Akihiro MITANI ,  Satoshi HIGUCHI ,  Minako SUZUKI ,  Yuji GOTO

IPC: H01M4/139 ,  H01M10/0562 ,  H01M10/0585 ,  H01M4/04

Abstract: A method of manufacturing a solid-state battery includes forming an electrode that includes a first electrode layer and a second electrode layer facing the first electrode layer and that further includes a buried layer interposed between the first electrode layer and the second electrode layer so as to surround a contact portion where these electrode layers contact each other. For the buried layer, a solid electrolyte with lower electron conductivity than an electrode active material is used, for example. The buried layer is provided between the edge portion of the first electrode layer and the edge portion of the second electrode layer, so that deformation of the first electrode layer and second electrode layer is prevented in the subsequent lamination and thermocompression bonding and thus the occurrence of a short circuit due to such deformation is prevented in the solid-state battery.

公开(公告)号：US20230369688A1

公开(公告)日：2023-11-16

申请号：US18223729

申请日：2023-07-19

Applicant: FDK CORPORATION

Inventor： Akihiro MITANI ,  Satoshi HIGUCHI ,  Toshiaki NAKANO ,  Masakazu KOBAYASHI ,  Minako SUZUKI

IPC: H01M50/11 ,  H01M50/172 ,  H01M50/117 ,  H01M10/04 ,  H01M10/052 ,  H01M10/058

CPC classification number: H01M50/11 ,  H01M50/172 ,  H01M50/117 ,  H01M10/049 ,  H01M10/052 ,  H01M10/058

Abstract: A solid-state battery includes a solid-state battery body and a coating film. The solid-state battery body has an electrolyte layer containing a solid electrolyte, a positive electrode layer formed on a part of a first principal plane of the electrolyte layer, and a negative electrode layer formed on a part of a second principal plane of the electrolyte layer opposite to the first principal plane. The coating film has an insulating property and covers the solid-state battery body so as to expose a first portion of the positive electrode layer and a second portion of the negative electrode layer. The coating film has hardness higher than that of solid electrolytes contained in the solid-state battery body.