Patent ID: 8088514

Claim:
A nonaqueous electrolyte battery comprising a positive electrode containing an active material, a negative electrode, a separator provided between the positive electrode and the negative electrode and a nonaqueous electrolyte, wherein: the negative electrode includes a current collector and a negative electrode porous layer supported by the current collector, the negative electrode porous layer containing a negative electrode active material, a conductive agent and a binder; and the negative electrode active material is a metal oxide, a metal sulfide, a metal nitride or an alloy having a Li insertion potential of not lower than 0.2V (vs. Li/Li + ), the negative electrode active material has an average primary particle diameter not larger than 1 μm, and the negative electrode porous layer faces the separator and has a specific surface area, excluding a weight of the current collector and as determined by the BET method utilizing a N 2 adsorption, which falls within a range of 3 to 50 m 2 /g.