ELECTROLYTE SOLUTION FOR LITHIUM ION SECONDARY BATTERIES AND LITHIUM ION SECONDARY BATTERY USING SAME
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United States of America Patent
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Sep 15, 2016
app pub date -
Mar 5, 2014
filing date -
Mar 5, 2014
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Provided are an electrolyte solution for lithium ion secondary batteries and a lithium ion secondary battery including the electrolyte solution for lithium ion secondary batteries, a positive electrode and a negative electrode. The electrolyte solution for lithium ion secondary batteries contains: an organic solvent containing a compound represented by formula (1); an electrolyte; and an additive containing metallic cations. In the formula (1), R1, R2 and R3 are independent of each other and are C1-C2 alkyl or C1-C2 alkoxyl. The metallic cations are of one or more types selected from K+, Rb+ and Cs+. One or more types of salt selected from a group consisting of KSO3CF3 and KN(SO2CF3)2 can be cited as examples of the additive.
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