LITHIUM ION SECONDARY BATTERY
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United States of America Patent
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Issued Date -
Mar 14, 2013
app pub date -
Jun 17, 2011
filing date -
Jun 25, 2010
priority date (Note) -
Abandoned
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Abstract
A lithium ion secondary battery which meets the requirement [1] of satisfying the formulae (a) to (c) or the requirement [2] of satisfying the formulae (b), (d), and (e): (a) 5≦A≦25, (b) 10≦B≦60, (c) 40≦2A+B≦90, (d) 0.2≦C≦1.2, and (e) −80 200C<3B≦150, wherein A (μm) represents an average particle size of a positive electrode active material; B (vol. %) represents a volume concentration of a fluorinated ether in a nonaqueous electrolyte solution; and C (m2/g) represents a specific surface area of the positive electrode active material.
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