PROCESS FOR PRODUCING SOLID POLYMER ELECTROLYTE MEMBRANE, AND SOLID POLYMER ELECTROLYTE MEMBRANE

WIPO Patent Application WO/2008/146766

A1

This invention provides a process for producing a reinforced solid polymer electrolyte membrane which has further improved durability against wetting/drying cycle and freezing/thawing cycle. The process for producing a reinforced solid polymer electrolyte membrane is characterized by impregnating a polymer electrolyte precursor in the absence of a solvent into (1) a sheet-shaped porous reinforcing material at a temperature above the melting point of the sheet-shaped porous reinforcing material, or (2) the sheet-shaped porous reinforcing material at a first temperature, which is a temperature below the melting point of the sheet-shaped porous reinforcing material, then heat treating the impregnated sheet-shaped porous reinforcing material at a second temperature which is a temperature above the melting point of the sheet-shaped porous reinforcing material and then hydrolyzing the polymer electrolyte precursor to convert the precursor to a polymer electrolyte.

ISHIKAWA, Masahiko (42-5 Akazutsumi 1-chomeSetagaya-k, Tokyo 05, 1568505, JP)
石川雅彦 (〒05 東京都世田谷区赤堤１丁目４２番５号ジャパンゴアテックス株式会社内 Tokyo, 1568505, JP)

JP2008/059611

December 04, 2008

May 20, 2008

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JAPAN GORE-TEX INC. (42-5, Akazutsumi 1-chome Setagaya-k, Tokyo 05, 1568505, JP)
ジャパンゴアテックス株式会社 (〒05 東京都世田谷区赤堤１丁目４２番５号 Tokyo, 1568505, JP)
ISHIKAWA, Masahiko (42-5 Akazutsumi 1-chomeSetagaya-k, Tokyo 05, 1568505, JP)

H01M8/02; H01B13/00; H01M8/10

AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg.5-1, Toranomon 3-chome,Minato-k, Tokyo 23, 1058423, JP)

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