Polarizable electrode for electric double-layer capacitor,...

Details Polarizable electrode for electric double-layer capacitor,... Polarizable electrode for electric double-layer capacitor,...

H - Electricity

01

G

H01G 4/008 (2006.01) H01G 9/00 (2006.01)

Patent

CA 2183046

The present invention provides: a polarizable electrode for use in electric double- layer capacitor, which is made of a carbon composite material composed mainly of: 100 parts by weight of an activated carbon, 0.5-90 parts by weight of an amorphous carbon, 0.1-1,000 parts by weight of a conductive agent, and 0.02-90 parts by weight of a fibrillated carbon; and an electric double-layer capacitor comprising at least one pair of a positive electrode and a negative electrode each containing the above polarizable electrode and each impreg- nated with an electrolytic solution. The above polarizable electrode and electric double- layer capacitor are substantially free from the drawbacks of conventional polarizable electrodes and conventional electric double-layer capacitors, have a low internal resistance and a long life, and can be charged with or can discharge a large electric current of several amperes to several hundreds of amperes momentarily.

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