公开(公告)号：US11898018B2

公开(公告)日：2024-02-13

申请号：US17332145

申请日：2021-05-27

Applicant: AGC Inc.

Inventor： Takumi Okuyama ,  Takeshi Hirai ,  Susumu Saito ,  Chikaya Tamitsuji ,  Daisuke Jomuta

IPC: C08J5/22 ,  C08L29/10 ,  H01M8/10 ,  H01M8/1004 ,  H01M8/1039 ,  H01M8/1051

CPC classification number: C08J5/225 ,  C08L29/10 ,  H01M8/1004 ,  H01M8/1039 ,  H01M8/1051 ,  C08J2329/10 ,  H01M2008/1095 ,  H01M2300/0082

Abstract: To provide a liquid composition capable of forming a membrane excellent in durability against hydrogen peroxide or peroxide radicals and excellent in hydrogen gas barrier property; a polymer electrolyte membrane; a membrane electrode assembly; and a polymer electrolyte fuel cell.
Liquid composition comprising a liquid medium, an acid-type sulfonic acid group-containing fluorocarbon polymer of which the hydrogen gas permeation coefficient under the conditions of a temperature of 80° C. and a relative humidity of 10% is at most 2.5×10−9 cm3·cm/(s·cm2·cmHg), and cerium atoms; a polymer electrolyte membrane 15 comprising the acid-type sulfonic acid group-containing fluorocarbon polymer, and cerium atoms; and a membrane electrode assembly 10 comprising an anode 13 having a catalyst layer, a cathode 14 having a catalyst layer, and the polymer electrolyte membrane 15 disposed between the anode 13 and the cathode 14.

公开(公告)号：US11851508B2

公开(公告)日：2023-12-26

申请号：US17330788

申请日：2021-05-26

Applicant: AGC Inc.

Inventor： Takeshi Hirai ,  Susumu Saito ,  Hiroyuki Watabe ,  Chikaya Tamitsuji ,  Daisuke Jomuta

IPC: C08F16/30 ,  B01J39/05 ,  B01J39/20 ,  C08J5/22 ,  C25B1/04 ,  C25B13/08 ,  H01M8/1004 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1067 ,  H01M8/10

CPC classification number: C08F16/30 ,  B01J39/05 ,  B01J39/20 ,  C08J5/2231 ,  C25B1/04 ,  C25B13/08 ,  H01M8/1004 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1067 ,  C08J2329/10 ,  H01M2008/1095

Abstract: An acid-type sulfonic acid group-containing polymer containing perfluoromonomer units, no monomer units having a halogen atom other than a fluorine atom, and acid type sulfonic acid groups, whose hydrogen gas permeability coefficient under the conditions of a temperature of 80° C. and a relative humidity of 10% is at most 2.5×10−9 cm3·cm/(s·cm2·cmHg), and whose mass reduction rate when immersed in hot water at 120° C. for 24 hours is at most 15 mass %. Liquid composition, membrane electrode assembly, polymer electrolyte fuel cell, and ion exchange membrane utilizing the acid-type sulfonic acid group-containing polymer.

公开(公告)号：US11414502B2

公开(公告)日：2022-08-16

申请号：US16801335

申请日：2020-02-26

Applicant: AGC Inc.

Inventor： Takeshi Hirai ,  Daisuke Jomuta ,  Chikaya Tamitsuji

IPC: C08F14/26 ,  C08F8/12 ,  C08L27/22 ,  H01M8/1004 ,  C07C303/22 ,  C07C309/80 ,  C07C309/82 ,  B01D71/32 ,  B01D67/00 ,  B01D69/02 ,  C08F16/24 ,  C08F16/30 ,  C08F216/14 ,  C08J5/22 ,  C25B1/02 ,  C25B1/04 ,  C25B1/46 ,  H01B1/12 ,  H01M4/86 ,  H01M8/1007 ,  H01M8/1039 ,  H01M8/18 ,  C25B13/08 ,  H01M8/1023 ,  C08F214/26 ,  H01M8/10 ,  H01M10/0565 ,  H01M50/411 ,  B01D71/36 ,  B01D71/82 ,  B01J39/20 ,  B01D69/14

Abstract: A fluorosulfonyl group-containing polymer having units represented by the following formula u1, a sulfonic acid group-containing polymer having fluorosulfonyl groups in the fluorosulfonyl group-containing polymer converted into sulfonic acid groups, its production method and its applications: wherein RF1 and RF2 are a C1-3 perfluoroalkylene group.