公开(公告)号：US20230090482A1

公开(公告)日：2023-03-23

申请号：US17908265

申请日：2021-04-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Arne Thaler ,  Andreas Rosin ,  Mark W. Muggli ,  Klaus Hintzer ,  Patrick K. Heimerdinger ,  Thorsten Gerdes ,  Denis Duchesne ,  Gregg D. Dahlke

IPC: H01M8/1039 ,  H01M8/1004 ,  H01M4/88

Abstract: A composite includes a fluorinated polymer and nanoparticles of a metal salt. The metal salt has a solubility product of not more than 1×10−4. The fluorinated polymer includes a fluorinated polymer backbone chain and a plurality of groups represented by formula —SO2X, in which each X is independently —NZH, —NZSO2(CF2)1-6SO2X′, —NZ[SO2(CF2)dSO2NZ]1-10SO2(CF2)dSO2X′ or —OZ, and Z is independently a hydrogen, an alkali-metal cation, or a quaternary ammonium cation, X′ is independently —NZH or —OZ, and each d is independently 1 to 6. A polymer electrolyte membrane, an electrode, and a membrane electrode assembly including the composite are also provided.