Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2007-02-20
2007-02-20
Alejandro, Raymond (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S047000, C429S313000, C429S314000, C252S062200, C521S027000
Reexamination Certificate
active
10627705
ABSTRACT:
A composite electrolyte membrane for decreasing the crossover of polar organic fuel and a fuel cell employing the membrane are provided. The composite electrolyte membrane includes a modified silica in which silicon atoms have substituents as represented by formula 1 and formula 2; and an cation exchange group-containing polymer:Formula 1in-line-formulae description="In-line Formulae" end="lead"?—R1—SO3Xin-line-formulae description="In-line Formulae" end="tail"?Formula 2in-line-formulae description="In-line Formulae" end="lead"?—R2—S—S—R3—in-line-formulae description="In-line Formulae" end="tail"?wherein, R1is an alkylene group with 2–7 carbon atoms, X is a hydrogen atom or an alkali metal, R2and R3are each independently an alkylene group with 2–7 carbon atoms.
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Korean Patent Office Action and English Translation.
Cho Ju-hee
Pak Chan-ho
Alejandro Raymond
Samsung SDI & Co., Ltd.
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