Solid electrolytic capacitor method of manufacturing the same
AssigneeSanyo Electric Co., Ltd.
InventorsYoshikazu Hirata, Tetsuro Iwasa
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Abstract
A solid electrolytic capacitor using a conductive polymer compound as a solid electrolyte includes an anode body, a dielectric oxide coating formed on a surface of the anode body, a sulfone group-containing silanol derivative layer formed on at least a portion of the dielectric oxide coating by a coupling reaction, and a conductive polymer compound layer formed at least on the sulfone group-containing silanol derivative layer. With this, a solid electrolytic capacitor having a low ESR and a high capacitance and a method of manufacturing the solid electrolytic capacitor can be provided.
Claims11
A solid electrolytic capacitor using a conductive polymer compound as a solid electrolyte, comprising:
- an anode body;
- a dielectric oxide coating formed on a surface of said anode body;
- a sulfone group-containing silanol derivative layer formed on at least a portion of said dielectric oxide coating by a coupling reaction;
- and
- a conductive polymer compound layer formed at least on said sulfone group-containing silanol derivative layer.
A method of manufacturing a solid electrolytic capacitor using a conductive polymer compound as a solid electrolyte, comprising the steps of:
- forming a dielectric oxide coating on a surface of an anode body;
- performing a coupling reaction of a silanol derivative containing a functional group forming a sulfone group by oxidation with at least a portion of said dielectric oxide coating;
- and
- oxidizing said silanol derivative containing the functional group to form a sulfone group-containing silanol derivative.
Dependencies are inferred from the claim text.