Amorphous thin film electrode materials from hydrous metal oxide

Details Amorphous thin film electrode materials from hydrous metal oxide Amorphous thin film electrode materials from hydrous metal oxide

1994-12-09

1997-02-04

Picard, Leo P.

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

361548, 361516, 29 2503, H01G 900, H01G 904, H01G 9042

Patent

active

056005350

ABSTRACT:
This invention relates to a novel electrode material for electrochemical ) capacitors. This invention also relates to a novel method for making such electrode. The electrode material is an amorphous phase of ruthenium oxide formed directly on titanium (Ti) substrate. The method is the application of heat on the Ti substrate which is wetted by metal alkoxide precursor. The method produces film which adheres to the substrate before and after charge/discharge cycling. As a result, the EC capacitors made of the electrode exhibit high power and also high energy which is higher than that of the traditional crystalline phase of ruthenium oxide thin film on Ti. This type of capacitor is especially suited for burst communication which requires energy with high power density, high energy density, and high cycle life at medium to low voltages (10-20 volts).

REFERENCES:
patent: 3718551 (1973-02-01), Martinsons
patent: 3853739 (1974-12-01), Kolb et al.
patent: 5369547 (1994-11-01), Evans

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