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Title: Amine oxide coating compositions

Patent ·
OSTI ID:1531472
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An aqueous coating composition is provided comprising carbon particles, one or more highly fluorinated polymers and one or more amine oxide surfactants, typically an amine oxide surfactant according to formula I: where n is 9 to 19. The coating composition is advantageously used in a method of making a gas diffusion layer for an electrochemical cell comprising the steps of: a) coating a electrically conductive porous substrate with the aqueous coating composition, and b) heating the electrically conductive porous substrate to a temperature sufficient to decompose the amine oxide surfactants. In another aspect, a gas diffusion layer for an electrochemical cell is provided which is advantageously free of surfactant.

Research Organization:
3M Innovated Properties Co., Saint Paul, MN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC02-99EE50582
Assignee:
3M Innovative Properties Company (St. Paul, MN)
Patent Number(s):
6,703,068
Application Number:
10/027,608
OSTI ID:
1531472
Resource Relation:
Patent File Date: 2001-12-19
Country of Publication:
United States
Language:
English

References (5)

Gas diffusion electrodes containing modified carbon products patent August 2001
Method of making gas diffusion layers for electrochemical cells patent October 2002
Gas diffusion layer for solid polymer electrolyte fuel cell patent October 2000
Non-aqueous electrochemical cell patent June 1987
Methods of preparing membrane electrode assemblies patent February 2003

Cited By (5)

Oxidatively stable microlayers of gas diffusion layers patent October 2009
Catalytically active gold supported on thermally treated nanoporous supports patent March 2012
Aqueous fluoropolymer dispersion stabilized with amine oxide surfactant and process for making coagulated fluoropolymer resin patent June 2011
Aqueous fluoropolymer dispersion stabilized with amine oxide surfactant and process for making coagulated fluoropolymer resin patent June 2011
Aqueous fluoropolymer dispersion stabilized with amine oxide surfactant and process for making coagulated fluoropolymer resin patent January 2012

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