Rechargeable lithium ion battery
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United States of America Patent
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Dec 5, 2017
Grant Date -
May 7, 2015
app pub date -
Nov 5, 2014
filing date -
Nov 7, 2013
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Abstract
The rechargeable lithium ion battery includes a positive active material including a lithium compound, a non-aqueous electrolyte including at least one disulfonate ester selected from a cyclic disulfonate ester represented by Chemical Formula 1 and a linear disulfonate ester represented by Chemical Formula 2, and includes at least one carbonate having an unsaturated bond selected from vinylene carbonate and vinylethylene carbonate. The non-aqueous electrolyte may include about 0.05 wt % to about 0.5 wt % of the disulfonate ester based on the total weight of the non-aqueous electrolyte, and about 0.2 wt % to about 1.5 wt % of the carbonate having the unsaturated bond based on the total weight of the non-aqueous electrolyte.
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