公开(公告)号：US10218023B2

公开(公告)日：2019-02-26

申请号：US15296143

申请日：2016-10-18

Applicant: AGC Inc.

Inventor： Hirokazu Wakabayashi ,  Satoru Hommura ,  Takashi Saeki ,  Tetsuji Shimohira

IPC: H01M8/10 ,  C08J5/20 ,  H01M8/1018 ,  H01M8/1004 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1072 ,  H01M4/88 ,  H01M8/1069 ,  H01M4/86

Abstract: To provide a process for forming a polymer electrolyte membrane having good durability and few wrinkles, a polymer electrolyte membrane capable of forming a catalyst layer, or a catalyst layer; a process for producing a fluorinated ion exchange resin fluid, or a paste for forming a catalyst layer, which can be used for such a forming process; and a process for producing a membrane/electrode assembly for a polymer electrolyte fuel cell having good durability and power generation properties. A fluorinated ion exchange resin fluid obtained by subjecting a powder or pellets of a fluorinated ion exchange resin having cation exchange groups to hydrogen peroxide treatment, followed by mixing with a solvent, is used.

公开(公告)号：US11495816B2

公开(公告)日：2022-11-08

申请号：US15714419

申请日：2017-09-25

Applicant: AGC Inc.

Inventor： Hirokazu Wakabayashi ,  Satoru Hommura ,  Atsuyoshi Takenaka

IPC: H01M4/86 ,  H01M4/88 ,  H01M8/10 ,  H01M8/1072 ,  H01M8/1039 ,  H01M8/1051 ,  H01M8/1023 ,  H01M8/1004 ,  H01M8/1048 ,  H01M8/1081

Abstract: A method for producing a liquid composition containing a fluoropolymer having sulfonic acid groups, trivalent cerium ions and water, by (1) irradiating a solution containing at least one cerium compound selected from cerium carbonate, cerium hydroxide and cerium oxide, the fluoropolymer and the water, with light at least partially in a wavelength region from 300 to 400 nm so that the ultraviolet irradiance on the surface of the solution is at least 0.1 mW/cm2 or (2) adding a reducing agent to a solution containing at least one cerium compound selected from cerium carbonate, cerium hydroxide and cerium oxide, the fluoropolymer and the water.

公开(公告)号：US10457760B2

公开(公告)日：2019-10-29

申请号：US15904578

申请日：2018-02-26

Applicant: AGC Inc.

Inventor： Hiroyuki Watabe ,  Hirokazu Wakabayashi

IPC: H01M4/86 ,  H01M4/88 ,  C08F16/24 ,  C08J3/03 ,  C08F8/00 ,  C08J3/05 ,  H01M8/10 ,  C08F214/26 ,  C08J5/22 ,  H01M4/90 ,  H01M8/1004 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1018

Abstract: A process for producing a liquid composition, which includes holding a fluorinated polymer having —SO2F groups at from 140 to 160° C. for at least 45 minutes, cooling it to less than 110° C. at a rate of at least 50° C./min, converting the —SO2F groups in the fluorinated polymer to ion exchange groups to obtain a fluorinated polymer having ion exchange groups, and mixing the fluorinated polymer having ion exchange groups and a liquid medium.

公开(公告)号：US10461336B2

公开(公告)日：2019-10-29

申请号：US15904562

申请日：2018-02-26

Applicant: AGC Inc.

Inventor： Hiroyuki Watabe ,  Hirokazu Wakabayashi

IPC: H01M4/86 ,  H01M4/88 ,  C08F16/24 ,  C08J3/03 ,  C08F8/00 ,  C08J3/05 ,  H01M8/10 ,  C08F214/26 ,  C08J5/22 ,  H01M4/92 ,  H01M8/1004 ,  H01M8/1018 ,  H01M8/1023 ,  H01M8/1039

Abstract: A process for producing a liquid composition, which includes holding a fluorinated polymer having —SO2F groups at from 110 to 130° C. for at least 45 minutes, cooling it to less than 110° C., converting the —SO2F groups in the fluorinated polymer to ion exchange groups to obtain a fluorinated polymer having ion exchange groups, and mixing the fluorinated polymer having ion exchange groups and a liquid medium.