Proton-conducting membrane, method for producing the same,...

Details Proton-conducting membrane, method for producing the same,... Proton-conducting membrane, method for producing the same,...

2005-03-08

2005-03-08

Le, Hoa Van (Department: 1752)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S306000, C429S313000, C429S317000

Reexamination Certificate

active

06864006

ABSTRACT:
A proton-conducting membrane, excellent in resistance to heat, durability, dimensional stability and fuel barrier characteristics, and showing excellent proton conductivity at high temperature and a method for producing the same. A proton-conducting membrane includes a carbon-containing compound and inorganic acid, characterized by a phase-separated structure containing a carbon-containing phase containing at least 80% by volume of the carbon-containing compound and inorganic phase containing at least 80% by volume of the inorganic acid, the inorganic phase forming the continuous ion-conducting paths. The method for producing the above proton-conducting membrane includes steps of preparing a mixture of a carbon-containing compound (D) having one or more hydrolyzable silyl groups and inorganic acid (C), forming the above mixture into a film, and hydrolyzing/condensing the hydrolyzable silyl group contained in the mixture formed into the film, to form a three-dimensionally crosslinked silicon-oxygen structure (A). The above proton-conducting membrane is incorporated in a fuel cell.

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US 20020091225 published on Jul. 11, 2002 with its priority of the provisional application 60/234,177 filed on Sep. 20, 2000.*
US 20030099874 publish on May 29, 2003.

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