Polymer electrolyte membrane for fuel cell, method of...

Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Fuel cell with solid electrolyte

Reexamination Certificate

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C521S027000

Reexamination Certificate

active

08039166

ABSTRACT:
A polymer electrolyte membrane for a fuel cell that can maintain a stable performance for a long time, a method of manufacturing the same, and a fuel cell employing the same. The polymer electrolyte membrane includes at least one kind of a basic polymer and an acidic dopant. A dimensional change in the planar direction of the electrolyte membrane between a wet state and a dry state is 5% or less.

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