Electrode material for electrolytic capacitor

Details Electrode material for electrolytic capacitor Electrode material for electrolytic capacitor

2007-03-31

2011-11-29

Xu, Ling (Department: 1784)

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

C428S317900, C428S613000, C428S632000, C428S650000, C428S687000, C428S213000, C428S469000

Reexamination Certificate

active

08067096

ABSTRACT:
There is provided an electrode material for electrolytic capacitor that attains an unprecedentedly high capacitance. The electrode material for electrolytic capacitor comprises a layer of valve metal particles furnished on the surface thereof with an oxide film, the layer having a porosity of 20 to 60% and a specific surface area of 30×103to 400×103cm2/cm3, wherein the valve metal particles are mixed together, with the particle diameters exhibiting a given distribution at least within the range of 0.005 to 0.1 μm, and form a base material surface, and wherein the valve metal consists of aluminum, and wherein the composition ratio of Al/O of the layer of valve metal particles furnished on the surface thereof with the oxide film is within the range of 2.0 to 5.5. The electrode material thus realizes high capacitance.

REFERENCES:
patent: 63-160322 (1988-07-01), None
patent: 1-208827 (1989-08-01), None
patent: 4-196208 (1992-07-01), None
Translation of JP-01-208827.
Translation of JP-04-196208.

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