Electrochemical capacitor having a proton conducting solid elect

Details Electrochemical capacitor having a proton conducting solid elect Electrochemical capacitor having a proton conducting solid elect

1993-12-20

1996-08-27

Fourson, George

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429191, 429218, H01M 618

Patent

active

055499899

ABSTRACT:
An electrochemical capacitor (10) stores an electrical charge from an external source (40). The capacitor has a positive electrode (30) and a negative electrode, each electrode being a metal oxide. A solid, protonically-conducting electrolyte (25 ) is disposed between the positive and negative electrodes and is in contact with each electrode. The electrochemical capacitor stores the electrical charge by changing the oxidation state of the metal oxide, oxidizing the metal at the positive electrode and reducing the metal at the negative electrode. The solid electrolyte is pseudoboehmite, tetramethyl ammonium hydrate, or Li.sub.5 AlO.sub.4. The electrodes are transition metals capable of forming multiple oxides, but not capable of forming metal hydrides.

REFERENCES:
patent: 4539276 (1985-09-01), Harbach
patent: 4633373 (1986-12-01), Phillips
patent: 4863813 (1989-09-01), Dyer
patent: 4894301 (1990-01-01), Dyer
patent: 5136474 (1992-08-01), Sarangapani
patent: 5162166 (1992-11-01), Ellgen

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