Nonaqueous-type electrolyte solution, and device comprising the same
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United States of America Patent
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Feb 19, 2013
Grant Date -
Aug 30, 2012
app pub date -
Oct 19, 2010
filing date -
Oct 28, 2009
priority date (Note) -
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Abstract
There are provided a nonaqueous-type electrolyte solution having high flame retardancy and a good capacity retention rate, and a device comprising the nonaqueous-type electrolyte solution. The nonaqueous-type electrolyte solution is used in a device comprising a positive electrode, a negative electrode and the nonaqueous-type electrolyte solution, and contains a lithium salt and a compound having a phosphazene structure, and further contains 0.05% by mass or more and 12.0% by mass or less of at least one disulfonate ester selected from a cyclic disulfonate ester and a chain disulfonate ester based on the total of the nonaqueous-type electrolyte solution.
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