Polarizable electrode for electric double-layer capacitor, and e

Details Polarizable electrode for electric double-layer capacitor, and e Polarizable electrode for electric double-layer capacitor, and e

1996-06-28

1998-11-17

Ledynh, Bot L.

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

361508, 361512, 361516, 429 27, 429 30, 429209, H01G 900, H01G 904

Patent

active

058385312

ABSTRACT:
The present invention provides; (1) a polarizable electrode for an electric double-layer capacitor, which includes a solid activated carbon obtained by pyrolyzing a mixture mainly containing an activated carbon and a thermosetting resin and which has, on the surface and/or inside, holes free from the solid activated carbon, and holes having a diameter of 5 .mu.m-70 .mu.m possessing a capacity of 0.01 cc/g-1.0 cc/g; (2) a process for producing the above polarizable electrode for an electric double-layer capacitor, which includes heat-treating, as necessary, a mixture mainly containing an activated carbon, a thermosetting resin and a fiber capable of vaporizing upon heating and then pyrolyzing the resulting materiall and (3) an electric double-layer capacitor including at least a pair of the above polarizable electrodes for an electric double-layer capacitor and an electroyte impregnated between the polarizable electrodes. The above polarizable electrode for an electric double-layer capacitor is free from the drawbacks of conventoinal polarizable electrodes, has a low internal resistance and can be charged with or can discharge a large electric current of several amperes to several hundreds of amperes momentarily.

REFERENCES:
patent: 4522895 (1985-06-01), Shigeta et al.

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