Lithium secondary batteries and nonaqueous electrolyte for use in the same
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United States of America Patent
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Aug 18, 2015
Grant Date -
Jan 21, 2010
app pub date -
Oct 19, 2006
filing date -
Oct 20, 2005
priority date (Note) -
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Abstract
A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output.
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