Patent ID: 7829224
Filing Date: 2010-11-09
Classification: C01G,C01P,H01M,Y02E,Y02T

Abstract:
1. A nonaqueous electrolyte battery, comprising: a positive electrode, 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 lithium-titanium oxide; 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.