NONAQUEOUS ELECTROLYTE ENERGY STORAGE DEVICE, DEVICE, AND METHOD FOR MANUFACTURING NONAQUEOUS ELECTROLYTE ENERGY STORAGE DEVICE
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United States of America
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Jan 9, 2025
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Nov 21, 2022
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Nov 21, 2022
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A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode containing a composite of porous carbon and sulfur; and a nonaqueous electrolyte containing a nonaqueous solvent containing an unsaturated cyclic carbonate and a lithium salt, in which a cumulative 70% pore size of the porous carbon is 2.0 nm or more and 7.0 nm or less, a content of the unsaturated cyclic carbonate in the nonaqueous solvent is 10 vol % or more, and a positive electrode potential at an end-of-discharge voltage in normal use is 1.0 V vs. Li/Li+ or less.
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