PROCESS FOR PRODUCING ACTIVE CARBON, POLARIZABLE ELECTRODE AND ELECTRIC DOUBLE LAYER CAPACITOR

Title:

PROCESS FOR PRODUCING ACTIVE CARBON, POLARIZABLE ELECTRODE AND ELECTRIC DOUBLE LAYER CAPACITOR

Document Type and Number:

WIPO Patent Application WO/2003/089371

Kind Code:

A1

Abstract:

Active carbon that is useful as a material of polarizable electrode of electric double layer capacitor can be obtained by mixing a carbon material with an alkali metal hydroxide while maintaining the solid state thereof, granulating the obtained mixture while maintaining the solid state, dehydrating the obtained granules while maintaining the solid state and activating the obtained granular dehydration product. In the step of granulation, preferred granulation pressure is in the range of 0.01 to 300 Torr and preferred granulation temperature is in the range of 90 to 140ºC. In the step of dehydration, preferred dehydration pressure is in the range of 0.01 to 10 Torr and preferred dehydration temperature is in the range of 200 to 400ºC.

Inventors:

SUGO NOZOMU (JP)
IWASAKI HIDEHARU (JP)
KITAMURA TAKANORI (JP)
MOROTOMI TATSUO (JP)
KOWAKA TAKESHI (JP)
OKADA TERUHIRO (JP)
NISHIMURA SHUSHI (JP)
FUJINO TAKESHI (JP)
OYAMA SHIGEKI (JP)
KAWABUCHI YUJI (JP)

Application Number:

PCT/JP2003/005091

Publication Date:

October 30, 2003

Filing Date:

April 22, 2003

Export Citation:

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Assignee:

KURARAY CHEMICAL KK (JP)
HONDA MOTOR CO LTD (JP)
KASHIMA OIL (JP)
SUGO NOZOMU (JP)
IWASAKI HIDEHARU (JP)
KITAMURA TAKANORI (JP)
MOROTOMI TATSUO (JP)
KOWAKA TAKESHI (JP)
OKADA TERUHIRO (JP)
NISHIMURA SHUSHI (JP)
FUJINO TAKESHI (JP)
OYAMA SHIGEKI (JP)
KAWABUCHI YUJI (JP)

International Classes:

C01B31/12; H01G9/00; H01G11/20; H01G11/22; H01G11/24; H01G11/26; H01G11/34; H01G11/38; H01G11/40; H01G11/42; H01G11/44; H01G11/86; (IPC1-7): C01B31/12; H01G9/058

Foreign References:

EP1176617A2	2002-01-30
JPH11349320A	1999-12-21
JP2002043190A	2002-02-08

Other References: