Preparation of capacitor electrodes

Details Preparation of capacitor electrodes Preparation of capacitor electrodes

1985-08-15

1986-04-15

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 42, 204 58, C25D 1112

Patent

active

045825742

ABSTRACT:
Aluminum capacitor foil which has been etched for low-voltage applications is rendered usable in intermediate to high voltage capacitors by anodizing the foil in two-stages; first a low voltage stage in an adipate electrolyte and then a higher voltage stage in a borate electrolyte. The fine etch structure of the low-voltage etch is thereby not plugged in the second, higher voltage formation stage, whereby the foil is suitable for intermediate to high-voltage capacitor use.

REFERENCES:
patent: 2052575 (1936-09-01), Lilienfeld
patent: 4481084 (1984-11-01), Chen et al.
patent: 4537665 (1985-08-01), Nguyen et al.
Alien Property Custodian, Miyata, Akira; U.S. Ser. No. 362,879, May 18, 1943.

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