Provided are (1) a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a biphenyl group-containing carbonate compound represented by the following general formula (I), (2) an energy storage device using the same, and (3) a biphenyl group-containing carbonate compound used for the same. This nonaqueous electrolytic solution is capable of improving electrochemical characteristics in a broad temperature range, especially at high temperatures, and further reducing a rate of increase in electrode thickness after high-temperature cycles.
In the formula, R
1
represents an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkynyl group having 3 to 6 carbon atoms, or an aryl group having 6 to 20 carbon atoms; and each of X
1
to X
4
independently represents a hydrogen atom, a phenyl group, or a benzyl group.
提供了以下内容:(1)一种非
水电解质溶液,其中电解质盐溶解在非
水溶剂中,该非
水电解质溶液包含下列通式(I)所代表的含有联
苯基碳酸酯化合物,(2)使用该溶液的储能装置,以及(3)用于该装置的含有联
苯基碳酸酯化合物。该非
水电解质溶液能够在广泛的温度范围内,特别是在高温下,改善电
化学特性,并进一步减少高温循环后电极厚度增加的速率。
在公式中,R1代表具有1至12个碳原子的烷基、具有2至6个碳原子的烯基、具有3至6个碳原子的炔基或具有6至20个碳原子的芳基;每个X1至X4独立地表示氢原子、苯基或苄基。