PROTON CONDUCTING MEMBRANE

Title:

PROTON CONDUCTING MEMBRANE

Document Type and Number:

WIPO Patent Application WO/2005/056650

Kind Code:

A1

Abstract:

[PROBLEMS] To provide a proton conducting membrane exhibiting satisfactory proton conductivity even in low humidity and low temperature environment. [MEANS FOR SOLVING PROBLEMS] There is provided a proton conducting membrane comprised of a copolymer having ion conducting polymer segment (A) and non-ion-conducting polymer segment (B), wherein of the water absorbed upon immersion of the membrane in 90°C water for 30 min, water exhibiting a freezing point of -30 to 0°C amounts to 0.01 to 3.0 g per gram of copolymer. In this copolymer, the main chain skeleton constituting the copolymer has such a structure that aromatic rings are covalent-bonded to each other through bonding groups.

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Inventors:

KAWAI JUNJI (JP)
SHIIBASHI TORU (JP)
GOTO KOHEI (JP)

Application Number:

PCT/JP2004/018292

Publication Date:

June 23, 2005

Filing Date:

December 08, 2004

Export Citation:

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Assignee:

JSR CORP (JP)
KAWAI JUNJI (JP)
SHIIBASHI TORU (JP)
GOTO KOHEI (JP)

International Classes:

H01B1/06; C08G61/00; C08G61/02; C08J5/22; H01B1/12; H01M8/02; H01M8/10; (IPC1-7): C08J5/22; C08G61/00; H01B1/06; H01B13/00; H01M8/02; H01M8/10

Domestic Patent References:

WO1995032236A1	1995-11-30
WO2002080294A1	2002-10-10
WO2002101860A1	2002-12-19

Foreign References:

JP2001250567A	2001-09-14
JP2003142125A	2003-05-16
JP2004175997A	2004-06-24

Other References: