公开(公告)号：US20200014070A1

公开(公告)日：2020-01-09

申请号：US16321783

申请日：2017-08-04

Applicant: TDK CORPORATION

Inventor： Masahiro OISHI ,  Hisaji OYAKE ,  Hiroshi SATO ,  Hiroko TAKAYANAGI ,  Gakuho ISOMICHI

IPC: H01M10/0585 ,  H01G11/56 ,  H01M10/0525 ,  H01M10/0562

Abstract: An electrochemical device has a laminated body including: a positive electrode; a negative electrode; and a solid electrolyte sandwiched between the positive electrode and the negative electrode, wherein the laminated body contains water, a content of the water contained in the laminated body is 0.001 mass % or more and less than 0.3 mass % with respect to the laminated body, a part of the water is a bound water bonding with a constituent of the laminated body, and a ratio of the bound water in the water is 50% or more and 90% or less.