Additive for nonaqueous electrolyte and secondary battery using the same
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United States of America Patent
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Mar 22, 2011
Grant Date -
Jan 18, 2007
app pub date -
Jun 30, 2006
filing date -
Jul 1, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is an electrolyte for a battery, which comprises: (a) an electrolyte salt; (b) a solvent for electrolyte; and (c) a compound represented by the following formula 1:wherein R is a halogen atom, or a halogen-substituted or non-substituted C1˜C10 alkyl group or alkenyl group. An electrode comprising a passivation layer partially or totally formed on a surface thereof, wherein the passivation layer comprises a compound represented by the following Formula 1 or a chemical reaction product thereof, and a secondary battery using the electrolyte and/or the electrode are also disclosed. The compound can improve the initial charge/discharge efficiency and cycle life characteristics of a secondary battery, and can inhibit a battery from swelling under high-temperature storage conditions.
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