Electric double layer capacitor

Details Electric double layer capacitor Electric double layer capacitor

1998-03-27

2000-02-29

Kincaid, Kristine

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

361503, 361504, 361508, 29 2503, H01G 900

Patent

active

060317124

ABSTRACT:
An aqueous electric double layer capacitor having excellent wettability with aqueous electrolytic solution, low internal resistance, excellent easiness of forming uniform, thin and wide films and mechanical strength. Activated carbon powder, a polymeric binder having a hydrophilic group and a plasticizer are fully mixed to form a film which is then dried to form an electrode. By using a polymer having a hydrophilic group as a binder, wettability between an aqueous electrolytic solution and the electrode is improved and contact resistance between an electrolysis solution and the electrode can be reduced. In addition, by adding a plasticizer, the amount of polymer binder required to form a thin type electrode can be reduced, thus providing an aqueous solution electric double layer capacitor with low internal resistance.

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