Patent ID: 8603675

Claim:
A nonaqueous electrolyte battery comprising a laminate film case; a positive electrode provided in the laminate film case and comprising an active material; a separator provided in the laminate film case; a negative electrode provided in the laminate film case and comprising a current collector and a porous negative electrode layer supported by the current collector and comprising a negative electrode active material, the negative electrode active material having a Li insertion potential not lower than 0.2V (vs. Li/Li + ) and an average primary particle diameter not larger than 1 μm, a specific surface area of the porous negative electrode layer as determined by the BET method utilizing a N 2 adsorption and falling within a range of 3 to 50 m 2 /g, and the porous negative electrode layer facing the separator; and a nonaqueous electrolyte provided in the laminate film case.