Solid electrolytic capacitors and method for manufacturing the s

Details Solid electrolytic capacitors and method for manufacturing the s Solid electrolytic capacitors and method for manufacturing the s

1992-04-14

1993-02-16

Griffin, Donald A.

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

29 3, H01G 904

Patent

active

051876507

ABSTRACT:
Solid electrolytic capacitors comprise a valve metal member having a dielectric oxide film and a conductive underlying layer formed on the member in this order, and a conductive polymer film formed on the layer. The conductive polymer film is formed by electrolytic polymerization of a polymerizable monomer contained in a system containing the monomer and a support electrolyte consisting of a compound having at least one nitro group. By this, high temperature stability of the capacitor is significantly improved. Alternatively, the electrolytic polymerization may be effected in a system which comprises a monomer, a support electrolyte and a phenol or phenoxide derivative having at least one nitro group. Methods for fabricating such capacitors are also described.

REFERENCES:
patent: 4609971 (1986-09-01), Shaffer
patent: 4785380 (1988-11-01), Harakawa et al.
patent: 4929316 (1990-05-01), Harakawa et al.
patent: 4943892 (1990-07-01), Tsuchiya et al.
patent: 5071521 (1991-12-01), Kojima et al.

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