公开(公告)号：US20240055641A1

公开(公告)日：2024-02-15

申请号：US18260842

申请日：2021-08-12

Applicant: CHIYODA CORPORATION ,  KYOTO UNIVERSITY

Inventor： Yoshimi OKADA ,  Takuo YASUNISHI ,  Kenichi IMAGAWA ,  Koichi EGUCHI ,  Toshiaki MATSUI ,  Hiroki MUROYAMA ,  Takashi OZEKI

IPC: H01M8/1246

CPC classification number: H01M8/1246 ,  H01M2008/1293

Abstract: [Task] Provided is a proton conductor and a manufacturing method thereof that are suitable for the use in a temperature range between 200° C. and 600° C.
[Solution] A proton conductor has electric conductivity of 0.01 S/cm or more at 300° C., wherein a portion of lithium ions of Li14−2xZn1+x(GeO4)4 is substituted with protons. The x is a number equal to or more than 0. 40% to 70% inclusive of movable lithium ions contained in Li14−2xZn1+x(GeO4)4 may be substituted with the protons. 50% to 60% inclusive of movable lithium ions contained in Li14−2xZn1+x as (GeO4)4 may be substituted with the protons. A manufacturing method of a proton conductor comprises a process of substituting a portion of lithium ions with protons by immersing Li14−2xZn1+x(GeO4)4 in a non-aqueous organic solvent containing acid.