Nonaqueous electrolyte battery, battery pack and vehicle

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

2007-03-19

2010-11-16

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer, spacer or materials for use therewith

C429S094000, C429S231500, C429S231900

Reexamination Certificate

active

07833664

ABSTRACT:
A nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material having a Lithium ion insertion potential of 0.4 V (vs. Li/Li+) or more. The separator is provided between the positive electrode and the negative electrode. The separator has a porosity of 50% or more and a pore diameter distribution in which a median diameter is larger than a mode diameter. The porosity and the pore diameter distribution are measured by mercury porosimetry. A surface roughness of the negative electrode is larger than the mode diameter.

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