Patent ID: 7749659

Claim:
A non-aqueous electrolyte battery comprising: a cathode having a cathode active material containing lithium; an anode having an anode active material capable of being doped with/dedoped from lithium; and a non-aqueous electrolyte including electrolyte salt, wherein the anode active material is composed of a mixture of a plurality of spherical carbonaceous materials having a particle size distribution satisfying the relationship represented by expressions (1) and (2) below: log( D 50)−log( D 10)≦0.3 (1) log( D 90)−log( D 50)≦0.3 (2) wherein the units of D are in units of μm and the logarithms have bases of 10; and wherein D10, D50, and D90 represent particle sizes of the mixture of the plurality of spherical carbonaceous materials, and where D10 represents a particle size such that 10% of the particles in the mixture of the plurality of spherical carbonaceous materials are smaller than D10, D50 represents a particle size such that 50% of the particles in the mixture of the plurality of spherical carbonaceous materials are smaller than D50, and D90 represents a particle size such that 90% of the particles in the mixture of the plurality of spherical carbonaceous materials are smaller than D90.