Electricity: electrical systems and devices – Electrolytic systems or devices – Double layer electrolytic capacitor
Patent
1996-01-16
1998-08-18
Lewis, Michael
Electricity: electrical systems and devices
Electrolytic systems or devices
Double layer electrolytic capacitor
361303, 361504, 361525, 361305, 428367, 428408, 252502, 429191, H01B 104
Patent
active
057965749
ABSTRACT:
The present invention provides:
a vitreous carbon-active carbon composite material wherein the vitreous carbon is derived from a polycarbodiimide resin;
a process for producing the above vitreous carbon-active carbon composite material, which comprises firing a mixture of a polycarbodiimide resin and an active carbon, or a molded article of desired shape prepared from said mixture, in a non-oxidizing atmosphere; and
a polarizable electrode for use in electric double layer capacitor, which consists of the above vitreous carbon-active carbon composite material.
Said electrode is free from the drawbacks of prior art, has a low internal resistance, causes a low degree of powder detachment, has large electric capacitance per unit weight and per unit volume, and can be produced easily, quickly and inexpensively.
REFERENCES:
patent: 4388163 (1983-06-01), Richter et al.
patent: 4810599 (1989-03-01), Kondo et al.
patent: 4831011 (1989-05-01), Oikawa et al.
patent: 5152941 (1992-10-01), Takaku et al.
patent: 5554354 (1996-09-01), Sugino et al.
Hagiwara Atsushi
Saito Kazuo
Hendrickson Stuart L.
Lewis Michael
Nisshinbo Industries Inc.
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