NONAQUEOUS ELECTROLYTIC SOLUTION FOR ENERGY STORAGE DEVICE
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United States of America Patent
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app pub date -
Feb 29, 2016
filing date -
Aug 30, 2013
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Abstract
There is provided a nonaqueous electrolytic solution for an energy storage device provided with a positive electrode, a negative electrode and a nonaqueous electrolytic solution which is obtained by dissolving an electrolytic salt into a nonaqueous solvent, wherein the negative electrode contains, as a negative electrode active material, lithium titanate that has a ratio DBET/DX (μm/μm) of 3 or less, the ratio DBET/DX (μm/μm) being a ratio of a specific surface area equivalent diameter n calculated from a specific surface area measured by a BET method to a crystallite diameter DX calculated using a Scherrer equation from an X-ray diffractometry result, and the nonaqueous electrolytic solution contains 0.01 to 3% by mass of an organic or inorganic compound having an oxalate structure.
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