Lithium magnesium manganese oxy-fluorides for Li-ion rechargeabl

Details Lithium magnesium manganese oxy-fluorides for Li-ion rechargeabl Lithium magnesium manganese oxy-fluorides for Li-ion rechargeabl

1997-12-04

1999-08-03

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

423464, 423599, 423641, H01M 450

Patent

active

059323744

ABSTRACT:
The cycling stability and capacity of Li-ion rechargeable batteries are improved, particularly in an elevated temperature range of about 55.degree. C., by the use of lithium magnesium manganese oxy-fluoride electrode components having the general formula, Li.sub.1+x Mg.sub.y Mn.sub.2-x-y O.sub.4-z F.sub.z, where x.ltoreq.0.2, 0.1.ltoreq.y.ltoreq.0.3, and 0.01.ltoreq.z.ltoreq.0.5.

REFERENCES:
patent: 5674645 (1997-10-01), Amatucci et al.
patent: 5702674 (1997-12-01), O'Young et al.
patent: 5759720 (1998-06-01), Amatucci
Xia et al., "Studies on Li-Mn-O spinel system . . . ", J. Power Sources, vol. 24, pp.24-28 (No month available), 1998.
LeCras et al., "Lithium intercalation in Li-Mg-Mn-O and Li-Al-Mn-O spinels", Solid State Ionics, vol. 89, pp. 203-213 (no month available), 1996.

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