Multi-layer polyelectrolyte membranes

摘要

A multilayer polyelectrolyte membrane for fuel cell applications includes a first perfluorocyclobutyl-containing layer that includes a polymer having perfluorocyclobutyl moieties. The first layer is characteristically planar having a first major side and a second major side over which additional layers are disposed. The membrane also includes a first PFSA layer disposed over the first major side of the first layer and a second PFSA layer disposed over the second major side of the first layer.

主权项

1. A multilayer polyelectrolyte membrane for a fuel cell, the membrane comprising:
a first perfluorocyclobutyl-containing layer comprising a polymer having perfluorocyclobutyl moieties, the first perfluorocyclobutyl-containing layer having a first major side and a second major side, the first perfluorocyclobutyl-containing layer having a thickness from 2 to 8 microns; a first perfluorosulfonic acid layer comprising a perfluorosulfonic acid polymer, the first perfluorosulfonic acid layer disposed over the first major side of the first perfluorocyclobutyl-containing layer, the first perfluorosulfonic acid layer having a thickness from 1 to 4 microns; a second perfluorosulfonic acid layer comprising a perfluorosulfonic acid polymer, the second perfluorosulfonic acid layer disposed over the second major side of the first perfluorocyclobutyl-containing layer, the second perfluorosulfonic acid layer having a thickness from 1 to 4 microns; and a support contacting at least one of the first perfluorosulfonic acid layer or the second perfluorosulfonic acid layer.