Lithium/bromine trifluoride electrochemical cell designed to be

Details Lithium/bromine trifluoride electrochemical cell designed to be Lithium/bromine trifluoride electrochemical cell designed to be

1992-03-25

1993-02-23

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

Fluid active material or two-fluid electrolyte combination...

429198, 429199, H01M 436, H01M 614

Patent

active

051889137

ABSTRACT:
A lithium and bromine trifluoride electrochemical cell designed to be discharged after being activated and stored, the cell comprising an anode made of lithium or lithium alloy and a positive current collector made of carbon black, and containing at least one compound that is soluble in bromide trifluoride, and is capable of stabilizing the passivation layer of said anode and of blocking corrosion of said anode during storage, the compound being selected from sulfonates and being at a concentration lying in the range 10.sup.-2 moles per liter to 1 mole per liter. After the cell of the invention has been stored, it restores a large fraction of its initial capacity (curve C).

REFERENCES:
patent: 3427207 (1969-02-01), Toy et al.
patent: 4107401 (1978-08-01), Goodson et al.
patent: 4246327 (1981-01-01), Skarstad et al.
Report, WGL-MLR-90-07, Order No. AD-A225508, P32 1990, Frysz, C. A. et al., Wilson Greatbatch Ltd.: `Feasibility of a Super High Energy Density Battery of the Li/BrF.sub.3 Electrochemnical System`.
Extended Abstracts (US) Electrochemical Society, vol. 88/2, No. 30, Princeton, N.J. US, pp. 42-43.
K. H. Park et al.: `A Comparison of Lithium Magnesium and Calcium Anodes in Bromine Trifluoride`.
Patent Abstracts of Japan, vol. 13, No. 561 (E-859)(3909) Dec. 13, 1989 and JP-A-1 232 661 (Sanyo Electric Co. Ltd.).

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