LITHIUM-ION SECONDARY BATTERY
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United States of America Patent
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Nov 5, 2015
app pub date -
Apr 16, 2013
filing date -
Jun 28, 2012
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Abstract
Provided is a lithium ion secondary battery having a large energy density and an improved capacity retention rate after repeated use even under high voltage application (cycle characteristics), and excellent in safety. A lithium ion secondary battery containing a negative electrode for reversibly intercalating and deintercalating lithium ions, a positive electrode containing lithium vanadium phosphate, and a non-aqueous electrolytic solution containing lithium fluoroethyl phosphate as an electrolyte can be obtained.
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