公开(公告)号：US20230253596A1

公开(公告)日：2023-08-10

申请号：US18133606

申请日：2023-04-12

Applicant: AGC INC

Inventor： Shintaro HAYABE ,  Kosuke Sumikura ,  Takayuki Kaneko ,  Takuo Nishio

IPC: H01M8/1065 ,  H01M8/18 ,  H01M8/1039 ,  C25B13/08

CPC classification number: H01M8/1065 ,  H01M8/188 ,  H01M8/1039 ,  C25B13/08

Abstract: To provide an electrolyte membrane wherein pinholes are less likely to occur even when used in a cell having an anode and a cathode under voltage for a prolonged period of time, as well as an electrolysis apparatus and a redox flow battery which contain the membrane. An electrolyte membrane comprising a fluorinated polymer containing ion-exchange groups and a woven fabric, wherein said woven fabric consists of yarns A extending in one direction and yarns B extending in a direction orthogonal to said yarns A, the aspect ratio YACA2/YACA1 exceeds 1 and is larger than the aspect ratio YAA2/YAA1, and the aspect ratio YACB2/YACB1 exceeds 1 and is larger than the aspect ratio YAB2/YAB1. (YACA2, YACA1, YAA2, YAA1, YACB2, YACB1, YAB2 and YAB1 are as defined in the specification.)

公开(公告)号：US20200259196A1

公开(公告)日：2020-08-13

申请号：US16861271

申请日：2020-04-29

Applicant: AGC Inc.

Inventor： Yasushi YAMAKI ,  Kosuke Sumikura ,  Takuo Nishio ,  Takumi Okuyama ,  Satoru Hommura

IPC: H01M8/1039 ,  C02F1/461

Abstract: The present invention provides a strong polymer electrolyte membrane which can provide a water electrolyzer operable at low electrolysis voltage. The polymer electrolyte membrane of the present invention comprises a fluorinated polymer and a woven fabric, wherein the weight of the woven fabric is from 20 to 95 g/m2, and the warp and weft of the woven fabric independently have a denier of from 30 to 100.

公开(公告)号：US12021284B2

公开(公告)日：2024-06-25

申请号：US16865576

申请日：2020-05-04

Applicant: AGC Inc.

Inventor： Yasushi Yamaki ,  Kosuke Sumikura ,  Tatsuya Miyajima ,  Takuo Nishio

IPC: H01M8/1039 ,  C08J5/22 ,  H01M8/10 ,  H01M8/1023 ,  H01M8/18

CPC classification number: H01M8/1039 ,  C08J5/2237 ,  H01M8/1023 ,  H01M8/188 ,  C08J2327/18 ,  H01M2008/1095

Abstract: The present invention provides an ion exchange membrane can improve the current efficiency of a redox flow battery without a drop in voltage efficiency, when used in the redox flow battery. The ion exchange membrane of the present invention is an ion exchange membrane comprising a fluorinated polymer having sulfonic acid functional groups, wherein the difference (D−Dc) between the distance D between ionic clusters and the diameter Dc of ionic clusters as measured by the small angle X-ray scattering is 0.60 nm or more, and the ion exchange capacity of the fluorinated polymer is 0.95 meq/gram dry resin or more.

公开(公告)号：US11742507B2

公开(公告)日：2023-08-29

申请号：US16861271

申请日：2020-04-29

Applicant: AGC Inc.

Inventor： Yasushi Yamaki ,  Kosuke Sumikura ,  Takuo Nishio ,  Takumi Okuyama ,  Satoru Hommura

IPC: H01M4/02 ,  H01M8/1039 ,  C02F1/461 ,  C25B13/08 ,  C25B1/04 ,  H01M8/10 ,  H01M8/1004 ,  H01M8/1018

CPC classification number: H01M8/1039 ,  C02F1/46104 ,  C25B1/04 ,  C25B13/08 ,  H01M8/10 ,  H01M8/1004 ,  H01M8/1018 ,  H01M2300/0082

Abstract: The present invention provides a strong polymer electrolyte membrane which can provide a water electrolyzer operable at low electrolysis voltage. The polymer electrolyte membrane of the present invention comprises a fluorinated polymer and a woven fabric, wherein the weight of the woven fabric is from 20 to 95 g/m2, and the warp and weft of the woven fabric independently have a denier of from 30 to 100.