Nonaqueous electrolyte secondary battery
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United States of America Patent
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Nov 10, 2020
Grant Date -
Jan 18, 2018
app pub date -
Feb 25, 2016
filing date -
Mar 12, 2015
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Abstract
A nonaqueous electrolyte secondary battery is provided, including: a positive electrode (10) that includes a lithium-manganese oxide as a positive electrode active material; a negative electrode (20) that includes SiOX (0≤X<2) in which at least a part of a surface is covered with carbon, or a Li—Al alloy as the negative electrode active material; and an electrolytic solution (50) that contains propylene carbonate (PC), ethylene carbonate (EC), and dimethoxy ethane (DME) as an organic solvent in a range of {PC:EC:DME}={0.5 to 1.5:0.5 to 1.5:1 to 3} in terms of a volume ratio, and at least one of lithium bis(fluorosulfonyl)imide (LiFSI) and lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) as a supporting salt in a total amount of 0.6 to 1.4 (mol/L).
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