Electrochemical cell

Details Electrochemical cell Electrochemical cell

1980-10-30

1982-12-28

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429218, 429232, 429224, 204 21, H01M 404, H01M 462

Patent

active

043662153

ABSTRACT:
A method of making a cathode for a secondary electrochemical cell is disclosed. The method involves activating or preconditioning an oxide which has a spinel-type or oxo-spinel type structure of the formula AB.sub.2 O.sub.4 with at least one of A or B being a transition metal, and A and B being di-, tri-, or tetravalent cations selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mg and Al. The method provides a cathode, which is in the form of a stable three-dimensional framework structure. In a secondary electrochemical cell the structure of the cathode is capable of reversible charge/discharge reactions while being stable with regard to other physical or chemical changes in structure.

REFERENCES:
patent: 3939008 (1976-02-01), Longo et al.
patent: 4132619 (1979-01-01), Klein et al.
patent: 4136233 (1979-01-01), Eisenberg
Proc. 28th Power Sources Symposium, 1978, Eisenberg.
J. Electrochem. Soc. 110, No. 6 (1963) 469, Selis et al.
Quart. Rev. Chem. Soc. 22, 30 (1968)-Dickens & Whittingham.
Liebert, B. E., PhD Thesis, Stanford Univ. 1977.
Murphy et al., Metal Chalcogenides as Reversible Electrodes in Nonaqueous Lithium Batteries, Journal of Crystal Growth 39 (1977) 185-199.

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