Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Patent
1981-09-08
1984-11-27
Hearn, Brian E.
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
429 15, 429 17, 429 21, 429 51, 429105, H01M 804, H01M 818, H01M 238, H01M 436
Patent
active
044851545
ABSTRACT:
An electrically rechargeable anionically active reduction-oxidation electric storage-supply system and process is disclosed using a sodium or potassium sulfide-polysulfide anolyte reaction and an iodide-polyiodide, chloride-chlorine or bromide-bromine species catholyte reaction. The catholyte and anolyte are separated by an ion selective membrane permeable to positive sodium and potassium ions and substantially impermeable to negative bromide, chloride, iodide, sulfide and polysulfide ions. A flowing electrolyte system is disclosed with external electrolyte storage vessels. The apparatus and process provide an electrically rechargeable anionically active reduction-oxidation system in which the electrolytes may be maintained at near neutral or slightly basic pH, with virtually no parasitic side reactions upon charging, such as hydrogen or oxygen evolution, and the disclosed storage and supply system provides higher energy densities than referenced prior art systems.
REFERENCES:
patent: 3214296 (1965-10-01), Smatko
patent: 3920474 (1975-11-01), Zito et al.
patent: 3996064 (1976-12-01), Thaller
patent: 4215182 (1980-07-01), Ang et al.
patent: 4220690 (1980-09-01), Blurton et al.
Ang Peter G. P.
Remick Robert J.
Hearn Brian E.
Institute of Gas Technology
Kalafut Stephen J.
Speckman Thomas W.
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