NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
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United States of America Patent
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Jan 5, 2017
app pub date -
Dec 5, 2014
filing date -
Dec 5, 2013
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Abstract
A nonaqueous electrolyte secondary battery, which contains: an anode capable of accumulating or releasing metal lithium, or a lithium ion, or both; a cathode relative to the anode; and a nonaqueous electrolyte, in which a lithium salt is dissolved in a nonaqueous solvent, wherein, after repeating charge of the nonaqueous electrolyte secondary battery to an overcharge region and discharge for the charge 20 times, a charge capacity of the nonaqueous electrolyte secondary battery for 21st charge is a capacity equal to or greater than 100% SOC (State of Charge), where 100% SOC is an arbitrary capacity indicating that electric potential of the anode is reduced by 5% or greater based on a relative value, compared to electric potential thereof when SOC is 0%.
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