Electric double layer capacitor having hydrophobic powdery activ

Details Electric double layer capacitor having hydrophobic powdery activ Electric double layer capacitor having hydrophobic powdery activ

1997-07-30

1998-07-14

Kincaid, Kristine L.

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

361512, 361534, H01G 900

Patent

active

057814031

ABSTRACT:
An electric double layer capacitor including a pair of activated charcoal electrodes facing each other with the intermediary of a porous separator, and current collecting members each being positioned on a surface of the respective electrode opposite to a surface contacting the separator is disclosed. Hydrophobic powdery activated charcoal is provided around the electrodes for adsorbing gases. With this arrangement, it is possible to prevent pressure inside the capacitor from being elevated by gases produced in the capacitor, thereby enhancing the reliability of the capacitor.

REFERENCES:
patent: 4757424 (1988-07-01), Morimoto et al.
patent: 5426561 (1995-06-01), Yen et al.
patent: 5450279 (1995-09-01), Yoshida et al.
patent: 5455999 (1995-10-01), Weiss et al.
patent: 5568353 (1996-10-01), Bai et al.

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