公开(公告)号：US20220367896A1

公开(公告)日：2022-11-17

申请号：US17849795

申请日：2022-06-27

Applicant: AGC INC.

Inventor： Masako KAWAMOTO ,  Satoru HOMMURA

IPC: H01M8/1025 ,  H01M8/1004 ,  H01M4/96

Abstract: The present invention provides a catalyst layer, a catalyst layer ink and a membrane-electrode assembly which enable provision of fuel cells with high power efficiency. The catalyst layer of the present invention comprises a carbon alloy catalyst and an ion exchange polymer which comprises at least one species of units having a cyclic ether structure selected from the group consisting of units represented by the formula (u11), units represented by the formula (u12), units represented by the formula (u21), units represented by the formula (u22) and units represented by the formula (u24).

公开(公告)号：US20210328247A1

公开(公告)日：2021-10-21

申请号：US17304879

申请日：2021-06-28

Applicant: AGC Inc.

Inventor： Masako KAWAMOTO ,  Satoru HOMMURA

IPC: H01M8/1039 ,  H01M4/92 ,  H01M8/1004 ,  H01M8/1025

Abstract: To provide a catalyst layer, a catalyst layer forming liquid, and a membrane electrode assembly, capable of forming a fuel cell excellent in power generation efficiency.
The catalyst layer of the present invention comprises a supported catalyst having a carrier containing a metal oxide and a catalyst supported on the carrier; and a polymer having at least one type of units containing a cyclic ether structure, selected from the group consisting of units (u11), units (u12), units (u21) and units (u22), and having an ion-exchange group, wherein the total of the content of the units containing a cyclic ether structure is at least 30 mol % to all units which the polymer contains:

公开(公告)号：US20230238558A1

公开(公告)日：2023-07-27

申请号：US18130518

申请日：2023-04-04

Applicant: AGC INC.

Inventor： Masako KAWAMOTO ,  Susumu SAITO

IPC: H01M8/1004 ,  H01M8/1039 ,  H01M4/86

CPC classification number: H01M8/1004 ,  H01M8/1039 ,  H01M4/8668 ,  H01M2008/1095

Abstract: To provide a membrane electrode assembly capable of forming a fuel cell excellent in power generation efficiency, and a polymer electrolyte fuel cell. The membrane electrode assembly of the present invention comprises an anode having a catalyst layer containing a proton-conducting polymer and a catalyst, a cathode having a catalyst layer containing a proton-conducting polymer and a catalyst, and a solid polymer electrolyte membrane disposed between the anode and the cathode, wherein the proton-conducting polymer contained in the catalyst layer of at least one of the anode and the cathode, is a polymer (H) having a cyclic ether structural unit and an ion exchange group, and the solid polymer electrolyte membrane contains a fluorinated polymer (S) having an ion exchange group; and the thickness of the solid polymer electrolyte membrane is from 5 to 15 μm, and the ratio of the content M1 [mol %] of the cyclic ether structure unit to the thickness T1 [μm] of the solid polymer electrolyte membrane is 4.5 or more.