Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1996-02-12
1996-10-22
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
429232, H01M 402, H01M 436
Patent
active
055675484
ABSTRACT:
A battery having a positive electrode comprising delta Li.sub.x V.sub.2 O.sub.5, wherein x ranges from 0.9 to 1.0, wherein the Li.sub.x V.sub.2 O.sub.5 has admixed therewith a conductive material. The delta Li.sub.x V.sub.2 O.sub.5 may be formed chemically by reacting V.sub.2 O.sub.5 with a lithium salt to transform all of the V.sub.2 O.sub.5 into Li.sub.x V.sub.2 O.sub.5. Alternatively, and preferred is to form it by electrochemically reacting an admixture of V.sub.2 O.sub.5 and a lithium metal containing electrode in an electrochemical reactor cell having a lithium containing electrolyte in a non-aqueous solvent to transform all of the V.sub.2 O.sub.5 into Li.sub.x V.sub.2 O.sub.5, after which the Li.sub.x V.sub.2 O.sub.5 is removed from the cell and used as a predetermined electrode configuration for use in a lithium metal free secondary cell. The positive electrode is delta LiV.sub.2 O.sub.5 with a conductive material therewith. The delta form of LiV.sub.2 O.sub.5 of this invention has its three strongest X-ray diffraction peaks at 4.97, 3.25 and 3.39 in order of decreasing intensity.
REFERENCES:
patent: 5232795 (1993-07-01), Simon et al.
patent: 5316875 (1994-05-01), Murai et al.
Delmas et al. article in Solid State Ionics 69, (1994) pp. 257-264, entitled The LixV205 system: An overview of the structure modifications induced by the lithium intercalation. (Month Unavailable).
Murphy et al. article in Inorganic Chemistry, vol. 18, No. 10, 1979, pp. 2800-2803, entitled: Lithium Incorporation by Vanadium (Mar) Pentoxide.
Walk, p. 268 of chapter eleven, in Lithium Batteries, edited by Jean-Paul Gavano, Academic Press, Ltd., London, 1983. (Month Unavailable).
Margalit Nehemiah
Walk Charles R.
Kalafut Stephen
Lilley, Jr. Richard H.
Munday John S.
Stanton Stephen G.
Tracor Applied Sciences, Inc.
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