Membrane electrode assembly and method of its manufacture
Assignee3M Innovative Properties Company
InventorsMark K. Debe, Thao Ngoc Pham, Andrew J. Steinbach
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Abstract
A method is provided for making a membrane electrode that employs a composite membrane, which include both a porous membrane and an ion conducting electrolyte, by partially filling a porous membrane with an ion conducting electrolyte to form a partially filled membrane and then compressing the partially filled membrane with electrode particles so as to remove void volume from the partially filled membrane and embed the electrode particles in the partially filled membrane. The membrane electrode of this invention is suitable for use in electrochemical devices, including proton exchange membrane fuel cells, electrolyzers, chlor-alkali separation membranes, and the like.
Claims14
A method of making a membrane electrode assembly comprising the steps of:
- a) partially filling a porous membrane with an ion conducting electrolyte to form a partially filled membrane;
- b) providing electrode particles;
- and
- c) compressing together said partially filled membrane and electrode particles so as to remove void volume from said partially filled membrane and embed said electrode particles in said partially filled membrane.
Dependencies are inferred from the claim text.