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Patent Searching and Data


Title:
PROTON EXCHANGE MEMBRANE FOR FUEL CELL
Document Type and Number:
Japanese Patent JP2012229423
Kind Code:
A
Abstract:

To provide a proton exchange membrane (PEM) with an ion exchange capacity of not less than 1 molar equivalent per kilogram and less than 20% water swelling.

The PEM includes a polymer having a polyphosphazene backbone with a polyaromatic functional group linked to the polyphosphazene as a polyaromatic side chain, a non-polyaromatic functional group linked to the polyphosphazene as a non-polyaromatic side chain, and an acidic functional group linked to the non-polyaromatic side chain. The polyaromatic functional group linked to the polyphosphazene provides for increased thermal and chemical stability, excellent ionic conductivities and low water swelling. The mole fraction of polyaromatic functional groups linked to the polyphosphazene backbone is between 0.05 and 0.60.


Inventors:
MULDOON JOHN
WYCISK RYSZARD J
PINTAURO PETER N
Application Number:
JP2012120411A
Publication Date:
November 22, 2012
Filing Date:
May 28, 2012
Export Citation:
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Assignee:
TOYOTA MOTOR ENG & MFG NORTH AMERICA INC
UNIV CASE WESTERN RESERVE
International Classes:
C08J5/22; C08G79/04; H01B1/06; H01M8/02; H01M8/10
Domestic Patent References:
JP2005036113A2005-02-10
JP2005174769A2005-06-30
JP2002363194A2002-12-18
Foreign References:
WO2006105130A22006-10-05
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Kazuhiro Nakamura
Nobuo Sekine
Yasuo Dogaki