ENDOHEDRAL FULLERENE DERIVATIVE, PROTON CONDUCTOR AND FUEL CELL

WIPO Patent Application WO/2005/049538

A1

In solid polymer fuel cells, a material resulting from chemical modification of a hollow fullerene of C₆₀, etc. with a proton dissociable group has conventionally be used as a material for an electrolyte membrane capable of conducting proton between a fuel electrode and an air electrode. However, there has been a problem such that the proton conductivity thereof is low so as to cause a high internal resistance of battery whereby use of a large current leads to a decrease of electromotive force. As the electrolyte membrane, use is made of a material resulting from chemical modification of a fullerene enclosing atom of 3 or higher electronegativity with a proton dissociable group, or a material of a fullerene enclosing atom of 1 or below electronegativity. These are effective in the increase of proton conductivity and decrease of internal resistance of fuel cell as compared with those of the material resulting from chemical modification of a hollow fullerene with a proton dissociable group.

KASAMA YASUHIKO (JP)
OMOTE KENJI (JP)
KUDO NOBORU (JP)

PCT/JP2004/015838

June 02, 2005

October 26, 2004

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IDEAL STAR INC (JP)
KASAMA YASUHIKO (JP)
OMOTE KENJI (JP)
KUDO NOBORU (JP)

C07C35/44; C09J161/06; C09J165/04; H01B1/12; H01M8/10; C08L61/06; (IPC1-7): C07C35/44; C08G61/02; H01B1/06; H01M8/02; H01M8/10

JP2002193861A

2002-07-10

PIETZAK B. ET AL.: "Properties of endohedral N@C60", CARBON, vol. 36, no. 5-6, 1998, pages 613 - 615, XP004124238

Fukumori, Hisao (5-11 Kudanminami 4-chom, Chiyoda-ku Tokyo 74, JP)

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