Nonaqueous electrolyte battery, battery pack and vehicle

Details Nonaqueous electrolyte battery, battery pack and vehicle Nonaqueous electrolyte battery, battery pack and vehicle

2010-01-21

2010-11-09

Crepeau, Jonathan (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S330000, C429S331000, C429S231800, C429S209000

Reexamination Certificate

active

07829224

ABSTRACT:
A nonaqueous electrolyte battery includes a negative electrode including a current collector and a negative electrode active material having a Li ion insertion potential not lower than 0.4V (vs. Li/Li+). 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 of 0.01 to 0.2 μm, and a second peak having a mode diameter 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. 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.

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