Electricity: electrical systems and devices – Electrolytic systems or devices – Solid electrolytic capacitor
Patent
1996-06-26
1998-08-04
Picard, Leo P.
Electricity: electrical systems and devices
Electrolytic systems or devices
Solid electrolytic capacitor
361524, 361527, 29 2503, H01G 900, H01G 9028
Patent
active
057903689
ABSTRACT:
A capacitor comprising: a porous sintered body 2 consisting mainly of titanium; a dielectric film 3 which is formed on the surface of the sintered body and which consists mainly of a perovskite type composite oxide having a general formula of ATiO.sub.3 ; a conductor or semiconductor which is formed on the surface of the dielectric film; and a counter-electrode which conducts to the conductor or semiconductor and which faces the sintered body; wherein the porosity of the porous sintered body is 20% or more. The capacitor is fabricated by immersing the porous sintered body in an aqueous solution containing strontium or barium, by performing a hydrothermal treatment at a specified temperature to form a composite oxide film having the above-described general formula as a dielectric film 3 on the surface of the sintered body; by forming a conductor or semiconductor electrode 4 on the surface of the oxide film; and by forming a counter electrode which conducts to the electrode and which faces the sintered body.
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Hayashi Motoo
Naito Yasuyuki
Dinkins Anthony
Murata Manufacturing Co. Ltd.
Picard Leo P.
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