Polymer electrolyte membrane and fuel cell using the same

Details Polymer electrolyte membrane and fuel cell using the same Polymer electrolyte membrane and fuel cell using the same

2006-01-27

2010-06-01

Rhee, Jane (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C521S027000

Reexamination Certificate

active

07727653

ABSTRACT:
A polymer electrolyte membrane includes a poly(benzoxazole) polymer doped with at least one acid. The polymer electrolyte membrane is manufactured by impregnating poly(benzoxazole) with an acid and has better ionic conductivity at high temperatures and better mechanical properties than a conventional poly(benzoxazole) polymer electrolyte membrane. In addition, the polymer electrolyte membrane has equivalent thermal stability to a conventional polymer electrolyte membrane.

REFERENCES:
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patent: 2004/0062969 (2004-04-01), Sakaguchi et al.
patent: 2004/0191602 (2004-09-01), Ishikawa et al.
patent: 2004-10631 (2004-01-01), None
patent: 2003-32321 (2003-04-01), None
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patent: WO 02/38650 (2002-05-01), None
patent: WO 03/033566 (2003-04-01), None
patent: WO 2005/007725 (2005-01-01), None
Office Action issued in Korean Patent Application No. 2005-8001 on May 25, 2006.
Office Action issued in corresponding Chinese Patent Application No. 2006100061852 dated Sep. 28, 2007.
Japanese Office Action dated Sep. 29, 2009.

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