Nonaqueous electrolyte secondary battery

Details Nonaqueous electrolyte secondary battery Nonaqueous electrolyte secondary battery

2007-06-12

2007-06-12

Weiner, Laura (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231400, C429S330000, C429S331000, C429S332000, C429S329000

Reexamination Certificate

active

10673350

ABSTRACT:
A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode comprising a graphite as a negative electrode active material, and a nonaqueous electrolyte including at least a saturated cyclic carbonic ester and containing a cyclic carbonic ester having a carbon-carbon double bond such that, when a content of the cyclic carbonic ester having a carbon-carbon double bond is x (g), a content of the graphite in the negative electrode is B (g), a specific surface area of the graphite is A (m2/g), a size of the crystallite of the graphite in a direction of the c axis is Lc, and a size of the crystallite of the graphite in a direction of the a axis is La, a condition expressed byin-line-formulae description="In-line Formulae" end="lead"?0.05×10−2≦x/[A×B×2Lc/(2Lc+La)]≦3×10−2in-line-formulae description="In-line Formulae" end="tail"?is satisfied.

REFERENCES:
patent: 5352548 (1994-10-01), Fujimoto et al.
patent: 5626981 (1997-05-01), Simon et al.
patent: 6413678 (2002-07-01), Hamamoto et al.
patent: 2004/0126668 (2004-07-01), Nishimura et al.
patent: 8-45545 (1996-02-01), None

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