Method of forming a solid electrolytic capacitor

Details Method of forming a solid electrolytic capacitor Method of forming a solid electrolytic capacitor

1996-03-25

1997-09-30

Utech, Benjamin

Coating processes

Electrical product produced

Condenser or capacitor

427307, 427402, B05D 512

Patent

active

056723776

ABSTRACT:
A process for the preparation of polyaniline by an oxidation polymerization of aniline with use of an oxidizing agent and a protonic acid, wherein the pKa value of a byproduct produced by the reduction of the oxidizing agent is greater than the pKa value of the protonic acid. The protonic acid is an aromatic sulfonic acid compound having at least a sulfonic-acid group. A process is also provided for the formation of a solid electrolytic capacitor including an electrolyte of the polyaniline. A method is provided of improving the electrical conductivity of the polyaniline prepared by the above process. The polyaniline is subjected to a heat treatment in a vacuum or an inert gas in which a partial pressure of oxygen is 10 mmHg or below.

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"Polaron Lattice in Highly Conducting Polyaniline: Theoretical and Optical Studies" by S. Stafstrom et al., Physical Review Letters, vol. 59, No. 13, Sep. 28, 1987, pp. 1464-1467.

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