Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-10-03
2006-10-03
Ryan, Patrick Joseph (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S134000, C429S247000
Reexamination Certificate
active
07115334
ABSTRACT:
The present invention is related to a gel electrolyte composed of a mixture comprising an acid and a high molecular compound. The acid is capable of causing the polymer compound to swell. The polymer compound may comprise a high molecular compound, such as, a partially methylated polybenzimidazole where at least one substituent R group of the polybenzimidazole structure is a methyl group. Additionally, the present invention is related to a fuel cell employing gel electrolyte of the present invention. The gel electrolyte of the present invention has good proton conductivity for a long period of time under conditions having a relative humidity in the range of about 0% to about 50% at an operating temperature in the range of about 100° C. to about 300° C.
REFERENCES:
patent: 4505840 (1985-03-01), Kurkov
patent: 5945233 (1999-08-01), Onorato et al.
patent: 11-503262 (1999-03-01), None
H.C. Park & Associates PLC
Lewis Ben
Ryan Patrick Joseph
Samsung SDI & Co., Ltd.
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