Non-aqueous electrolyte battery

A non-aqueous electrolyte battery comprising:

• an electrode group comprising a positive electrode, a negative electrode and a separator disposed between the positive electrode and negative electrode;
• and
• a non-aqueous electrolyte,
• wherein the negative electrode comprises a current collector and a porous negative electrode layer formed on the current collector and containing lithium compound particles as an active material and binder,
• a distribution of grain size in the lithium compound particles has a peak at a grain size of 0.3 to 2 μm and a peak at a grain size exceeding 2 μm and less than 10 μm, and the relation:
• 0.2≦(b/a)≦1.0 is established between the maximum frequency (a) in the range from 0.3 to 2 μm and the maximum frequency (b) in the range exceeding 2 μm and less than 10 μm,
• the binder contains 2 to 7% by weight of porous negative electrode layer,
• the porous negative electrode layer has pores at least in the binder and between lithium compound particles and the binder,
• the pores in the porous negative electrode layer are distributed such that a distribution has a first peak at a pore diameter of 0.04 to 0.15 μm and a second peak at a pore diameter of 0.8 to 6 μm in the relation between the pore diameter and log differential intrusion obtained in the mercury press-in method, and
• the non-aqueous electrolyte comprises at least one electrolytic salt selected from the group consisting of LiPF6, LiBF4, Li(CF3SO2)2, LiCF3SO3, Li(C2F5SO2)2N, LiClO4, LiAsF6, LiSbF6, LiB(C2O4)2 and LiBF2(OCOOC(CF3)2, and at least one non-aqueous solvent selected from the group consisting of propylene carbonate (PC), ethylene carbonate (EC), 1,2-dimethoxyethane (DME), γ-butyrolactone (GBL), tetrahydrofuran (THF), 2-methyltetrahydrofuran (2-MeHF), 1,3-dioxolan, sulfolane, acetonitrile (AN), diethyl carbonate (DEC), dimethyl carbonate (DMC), methyl ethyl carbonate (MEC) and dipropyl carbonate (DPC).