High stability membrane for proton exchange membrane fuel cells

Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation

Reexamination Certificate

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Details

C429S006000, C521S027000

Reexamination Certificate

active

07323265

ABSTRACT:
A proton exchange membrane which includes a sulfonated and phosphonated poly (styrene) material having a covalently bonded tertiary hydrogen replacement group.

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