Polymer electrolyte, method of preparing the same, and fuel...

Details Polymer electrolyte, method of preparing the same, and fuel... Polymer electrolyte, method of preparing the same, and fuel...

2007-09-10

2010-06-01

Cano, Milton I (Department: 1796)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S315000, C525S185000, C525S454000, C525S455000, C252S062200

Reexamination Certificate

active

07727675

ABSTRACT:
A polymer electrolyte includes a heat-treated polymerization product of a polyurethane-based compound and a polyethylene(meth)acrylic acid, wherein the polyurethane-based compound is produced by polymerizing a diisocyanate-based compound, a phosphoric acid-based polyol, and a chain extender. The polymer electrolyte has a high ionic conductivity at high temperatures without causing deformation of an electrolyte membrane. The polymer electrolyte membrane can be inexpensively and simply manufactured, and the thickness of the membrane can be easily controlled. In addition, a large amount of phosphoric acid can be impregnated into the polymer electrolyte. A fuel cell that is operative at a temperature of 100° C. or higher under non-humidified conditions and has improved energy generating efficiency can be prepared by employing the polymer electrolyte membrane.

REFERENCES:
patent: 5525436 (1996-06-01), Savinell et al.
patent: 7232876 (2007-06-01), Tamura et al.
patent: 7452487 (2008-11-01), Kanzaki
patent: 2005/0231894 (2005-10-01), Yoshida et al.
patent: 2006/0269817 (2006-11-01), Cho et al.

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