| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary battery superior in charging/discharging performance at a low temperature and in life performance at a high temperature. <P>SOLUTION: The non-aqueous electrolyte secondary battery comprises a positive electrode active material using Li<SB>x</SB>Mn<SB>y</SB>M<SB>z</SB>O<SB>4</SB>(1.05<x<1.2, 1.8<y<1.95, 0<z<0.15, M is one or more type of element selected from Al, Mg) and an electrolyte containing cyclic carboxylate, cyclic carbonate having unsaturated bonds and soluble to the cyclic carboxylate and LiBF<SB>4</SB>. <P>COPYRIGHT: (C)2003,JPO |
