Method for conducting electric activation of electric double...

Details Method for conducting electric activation of electric double... Method for conducting electric activation of electric double...

2007-05-08

2007-05-08

Tsai, H. Jey (Department: 2812)

Metal working

Barrier layer or semiconductor device making

Barrier layer device making

C361S502000

Reexamination Certificate

active

11499801

ABSTRACT:
An object of the present invention is to provide a method for conducting electric activation of an electric double layer capacitor, the method making it possible to increase the electrostatic capacitance and to decrease the internal resistance. The method is for conducting electric activation of an electric double layer capacitor in which nonporous carbonaceous electrodes containing graphite-like fine crystalline carbon are soaked in an organic electrolytic solution. The method at least comprises: charging the electric double layer capacitor at a constant current until the interelectrode voltage reaches a predetermined voltage which is not lower than the electrostatic capacitance developing voltage but lower than the rated voltage; conducting constant voltage charging for a predetermined time during which ions of solutes in the organic electrolytic solution are conceived to be adsorbed uniformly on the surface of the fine crystalline carbon at that predetermined voltage.

REFERENCES:
patent: 6352565 (2002-03-01), Suhara et al.
patent: 11-317333 (1999-11-01), None
patent: 2000-077273 (2000-03-01), None
patent: 2000-277397 (2000-10-01), None
patent: 2001-223143 (2001-08-01), None
patent: 2002-025867 (2002-01-01), None
Michio Okamura “Electric Double Layer Capacitors and Power Storage Systems” 2nd Edition The Nikkan Kokyo Shimbun, Ltd., 2001, pp. 34 to 37.
Takeuchi Yasushi “Porous Materials: Characterization, Production and Application”, Fujitec Corp., 1999, pp. 56-61.

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