Electrolytic capacitor and electrolyte therefor

Details Electrolytic capacitor and electrolyte therefor Electrolytic capacitor and electrolyte therefor

1987-03-20

1989-03-14

Griffin, Donald A.

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

252 622, H01G 900, H01G 522

Patent

active

048129518

ABSTRACT:
An electrolytic capacitor includes a pair of electrodes, one of which is composed of a film-forming metal and an electrolyte comprising substantially one volume of dimethyl sulfoxide and substantially three volumes of a member of a solvent group consisting of N-ethyl-2-pyrrolidone, N-methyl pyrrolidone, butyrolactone, propylene carbonate and substituted cyanamides such as di-ally cyanamide, and mixtures thereof. Preferably the electrolyte also includes from 3 volume % to 10 volume % phosphoric or phosphorous acid and an ionogen, such as an amine salt.

REFERENCES:
patent: 3300693 (1967-01-01), Ross et al.
patent: 3487270 (1969-12-01), Alwitt
patent: 3551755 (1970-12-01), Bode et al.
patent: 4476517 (1984-10-01), Fresia
patent: 4479167 (1984-10-01), Ross et al.
patent: 4541037 (1985-09-01), Ross et al.

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