Non-aqueous electrolyte and non-aqueous electrolyte secondary battery
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United States of America Patent
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May 29, 2012
Grant Date -
Dec 31, 2009
app pub date -
Jun 23, 2009
filing date -
Jun 30, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A non-aqueous electrolyte secondary battery is produced using a non-aqueous electrolyte including: a non-aqueous solvent that primarily contains a solvent mixture of ethylene carbonate and propylene carbonate and includes a fluorine-substituted ether having a divalent group represented by a formula: —CFX—CH(CH3)—O—, where X is a hydrogen atom or fluorine atom, in a molecule thereof; and a lithium salt that is dissolved in the non-aqueous solvent. The non-aqueous electrolyte has favorable wettability towards a polyolefin separator, and improves the cycle characteristics and the load characteristics of the non-aqueous electrolyte secondary battery.
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