Method of producing an electrode foil for use in aluminum electr

Details Method of producing an electrode foil for use in aluminum electr Method of producing an electrode foil for use in aluminum electr

1991-07-15

1992-06-09

Tufariello, T. M.

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Coating moving substrate

205332, C25D 1104

Patent

active

051204045

ABSTRACT:
There is provided a method of producing an electrode foil for use in aluminum electrolytic capacitors. This method includes the steps of (a) introducing a predetermined length of an aluminum foil into an electrolytic solution without supplying any current; (b) supplying a current to the aluminum foil until voltage becomes constant while keeping the aluminum foil stationary therein; (c) repeating the steps (a) and (b) for another predetermined length of the aluminum foil; and (d) finally holding the aluminum foil thus obtained while applying a constant voltage thereto. According to this method, an excellent electrode foil can be obtained which provides an aluminum electrolytic capacitor with high capacitance and significantly reduced leakage current.

REFERENCES:
patent: 4861439 (1989-08-01), Stevens

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