Patent ID: 7172836
Filing Date: 2007-02-06
Classification: H01M,Y02E,Y10T

Abstract:
1. A nonaqueous electrolyte battery comprising: (a) a cathode comprising a positive active material, said positive active material comprising a spinel type lithium manganese oxide of formula LiMn (i) x≧0.9; (ii) 0.01≦y≦0.5, and (iii) M is one or more elements selected from the group consisting of Fe, Co, Ni, Cu, Zn, Al, Sn, Cr, V, Ti, Mg, Ca and Sr; (b) an anode including a negative active material capable of being doped with or dedoped of lithium; and (c) a nonaqueous electrolyte provided between the cathode and the anode, wherein: a ratio X is such that 20≦X≦50, with the first charging capacity of the positive active material per gram being Cc [mAh/g], the weight of the positive active material being Cw [g], the first charging capacity of the negative active material per gram being Ac [mAh/g], the first discharging capacity being Ad [mAh/g] and the weight of the negative active material being Aw [g].