Membrane and electrode structure
AssigneeE. I. Du Pont de Nemours and Company
InventorsWalther G. Grot, Shoibal Banerjee
Life of this patent
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Abstract
The electrode layer of a ion exchange membrane is formed by printing a ink of catalytically active particles on the surface of the membrane. The inventive electrode ink comprises: (a) catalytically active particles; (b) a hydrocarbon having at least one ether, epoxy or ketone linkage and an alcohol group, preferably 1-methoxy 2-propanol; and (c) optionally a binder, preferably perfluorinated sulfonyl fluoride polymer or perfluorinated sulfonic acid polymer.
Claims22
An electrode composition comprising:
- (a) catalytically active particles;
- (b) a hydrocarbon selected from the group of 1-methoxy-2propanol, 1-ethoxy-2-propanol;
- 1-methoxy-2-methyl-2-propanol;
- 1-isopropoxy-2-propanol;
- 1-propoxy-2-propanol;
- 2-phenoxy-1-propanol;
- 2-ethoxy-1-propanol;
- 2,3-ethoxy-1-propanol;
- 2-methoxy- 1-propanol;
- 1-butoxy-2-propanol;
- or mixtures thereof;
- and
- (c) a binder.
A fuel cell comprising a membrane and electrode structure wherein the electrode comprises:
- (a) catalytically active particles;
- and
- (b) a hydrocarbon having one or more ether or ketone
- linkages and an alcohol group.
A membrane and electrode structure comprising:
- (a) an ion exchange membrane having an electrode composition applied thereto, said electrode composition comprising:
- (i) catalytically active particles;
- (ii) a hydrocarbon having one or more ether or ketone linkages and one or more alcohol groups;
- and
- (iii) a binder.
Dependencies are inferred from the claim text.