| http://www.w3.org/ns/prov#value | - terial for the lithium secondary battery of the present invention, materials such as Li.sub.xCoO.sub.2, Li.sub.xNio.sub.2, Li.sub.xMn.sub.2O.sub.4, (where, X is in a range 0-1) and the like are desirable because a highdischarge voltage of at least 3.5 V can be obtained, and the reversibility of the charging and discharging of the positive electrode itself is superior.As for the electrolytic soluti
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