Lithium manganese oxy-fluorides for li-ion rechargeable battery electrodes
AssigneeBell Communications Research, Inc.
InventorsGlenn G. Amatucci, Jean-Marie Tarascon
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Abstract
The cycling stability and capacity of li-ion rechargeable batteries are improved by the use of lithium manganese oxy-fluoride electrode component intercalation materials having the general formula, Li.sub.1+x M.sub.y Mn.sub.2-x-y O.sub.4-z F.sub.z, where M is a transition metal, e.g., Co, Cr, or Fe, and x.ltoreq.0.4, y.ltoreq.0.3, and 0.05.ltoreq.z.ltoreq.1.0.
Claims12
A lithium manganese oxy-fluoride compound having the general formula, Li.sub.1+x M.sub.y Mn.sub.2-x-y O.sub.4-z F.sub.z, where M is a transition metal and x.ltoreq.0.4, y.ltoreq.0.3, and 0.05.ltoreq.z.ltoreq.1.0.
A rechargeable battery cell comprising a positive electrode, a negative electrode, and a separator disposed therebetween characterized in that said positive electrode comprises an intercalation compound having the general formula, Li.sub.1+x M.sub.y Mn.sub.2-x-y O.sub.4-z F.sub.z, where M is a transition metal and x.ltoreq.0.4, y.ltoreq.0.3, and 0.05.ltoreq.z.ltoreq.1.0.
Dependencies are inferred from the claim text.