公开(公告)号：US20220231332A1

公开(公告)日：2022-07-21

申请号：US17714529

申请日：2022-04-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Makoto YOSHIOKA ,  Akisuke ITO ,  Kenji OSHIMA ,  Kenichi BANDO

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/36

Abstract: A solid-state battery that includes a battery element body including a positive electrode layer and a negative electrode layer stacked with respect to each other with a solid electrolyte layer interposed therebetween; and an exterior material covering a surface of the battery element body, wherein the exterior material is a sintered body containing a glassy material and at least two crystalline materials, and the glassy material and the at least two crystalline materials contain at least one common element.

公开(公告)号：US20220140404A1

公开(公告)日：2022-05-05

申请号：US17574810

申请日：2022-01-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenji OSHIMA ,  Makoto YOSHIOKA

IPC: H01M10/0585 ,  H01M10/0525 ,  H01M4/62 ,  H01M50/547

Abstract: A method of manufacturing a solid state battery that includes forming a solid state battery precursor by sequentially laminating a positive electrode layer sheet, a solid electrolyte layer sheet, and a negative electrode layer sheet along a laminating direction; providing a terminal non-connection portion contact sheet so as to contact a terminal non-connection portion of an outer edge portion of each of the positive electrode layer sheet and the negative electrode layer sheet, wherein the terminal non-connection portion contact sheet has a ratio of a thermal expansion coefficient of at least one of a solid electrolyte material and an insulating material contained in the terminal non-connection portion contact sheet to a thermal expansion coefficient of an electrode material contained in at least one of the positive electrode layer sheet and the negative electrode layer sheet of 0.7 or more and less than 1.5; and firing the solid state battery precursor.