| abstract |
The nonaqueous electrolyte seconday battery is essentially comprised of a negative electrode (1) which comprises a carbonaceous material capable of doping and de-doping lithium, a positive electrode (2) made of an active material which comprises a Li-containing metal complex oxide of the general formula, Li x MO₂, wherein M represents at least one member selected from the group consisting of Co, Ni and Mn and 0.5 ≦ x ≦ 1, and a nonaqueous electrolyte which contains an electrolyte and an organic solvent therefor. The organic solvent is a mixed solvent of propylene carbonate and at least one member selected from the group consisting of diethyl carbonate and dipropyl carbonate. |