Fuel cell membrane electrode assembly and method for producing the same, and fuel cell

摘要

The membrane electrode assembly (MEA) of the present invention is a fuel cell MEA including an anion exchange membrane and a catalyst layer disposed on the surface of the membrane. In the MEA, the anion exchange membrane is an anion-conducting polymer electrolyte membrane in which a graft chain having anion conducting ability is graft-polymerized on a substrate formed of a skived film of ultra-high molecular weight polyolefin. This MEA has various superior properties for achieving an improvement in the power output of an anion exchange PEFC compared to conventional MEAs.

主权项

1. A fuel cell membrane electrode assembly comprising: an anion exchange membrane; and a catalyst layer disposed on a surface of the anion exchange membrane, wherein
the anion exchange membrane is an anion-conducting polymer electrolyte membrane in which a graft chain having anion conducting ability is graft-polymerized on a substrate formed of a skived film of ultra-high molecular weight polyolefin having a molecular weight of 1000000 to 4000000 in terms of weight average molecular weight, and the graft chain is introduced between crystals of the ultra-high molecular weight polyolefin present in the substrate formed of the skived film.