Chemistry: electrical current producing apparatus – product – and – Preserving cell in storage feature
Patent
1996-05-09
1997-12-09
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
Preserving cell in storage feature
429137, 296235, 427220, H01M 214
Patent
active
056958870
ABSTRACT:
The extent of self-discharge of rechargeable Li-ion secondary batteries is significantly reduced by treatment of LiMn.sub.2 O.sub.4 intercalation compound electrode material with a chelating agent, such as acetylacetone. This treatment decreases the incidence of non-coordinated Mn-ion sites which can lead to battery electrolyte decomposition and resulting loss of battery capacity. The treatment, which also includes annealing at about 400.degree. C. to 800.degree. C., further prevents such decomposition by varying the surface area and topography of the potentially catalytic electrode material.
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patent: 5082811 (1992-01-01), Bruno
patent: 5192629 (1993-03-01), Guyomard et al.
patent: 5425932 (1995-06-01), Tarascon
patent: 5460904 (1995-10-01), Gozdz
patent: 5547778 (1996-08-01), Fauteux et al.
Amatucci Glenn G.
Blyr Alexandra
Tarascon Jean-Marie
Bell Communications Research Inc.
Giordano Joseph
Kalafut Stephen
White Lionel N.
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