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US 9,040,209 B2Granted
Multi-layer polyelectrolyte membranes
AssigneeGM Global Technology Operations LLC
InventorsLijun Zou, Scott C. Moose, Timothy J. Fuller
Life of this patent
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Abstract
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.
Claims13
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.
2 more elements
Dependencies are inferred from the claim text.