Patent ID: 8133619

Claim:
A nonaqueous electrolyte battery, comprising: a positive electrode comprising at least one selected from the group consisting of manganese dioxide, iron oxide, copper oxide, nickel oxide, lithium-manganese composite oxide, lithium-nickel composite oxide, lithium-cobalt composite oxide, lithium-nickel-cobalt composite oxide, lithium-manganese-cobalt composite oxide, spinel type lithium-manganese-nickel composite oxide, lithium phosphorus oxide having an olivine structure, iron sulfate, vanadium oxide and lithium-nickel-cobalt-manganese composite oxide; a negative electrode including a current collector and a negative electrode layer being supported by the current collector, and the negative electrode layer containing a negative electrode active material having a Li ion insertion potential not lower than 0.4V (vs. Li/Li+); and a nonaqueous electrolyte, wherein, the negative electrode has a porous structure, a pore diameter distribution of the negative electrode as determined by a mercury porosimetry, which includes a first peak having a mode diameter falling within a range of 0.01 to 0.2 μm, and a second peak having a mode diameter falling within a range of 0.003 to 0.02 μm, a volume of pores having a diameter of 0.01 to 0.2 μm as determined by the mercury porosimetry is 0.05 to 0.5 mL per gram of the negative electrode excluding the weight of the current collector, and a volume of pores having a diameter of 0.003 to 0.02 μm as determined by the mercury porosimetry is 0.0001 to 0.02 mL per gram of the negative electrode excluding the weight of the current collector.