NONAQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM BATTERY, LITHIUM BATTERY USING SAME, AND FORMYLOXY GROUP-CONTAINING COMPOUND USED THEREIN
申请人:Abe Koji
公开号:US20110183199A1
公开(公告)日:2011-07-28
Disclosed are a nonaqueous electrolytic solution for lithium secondary battery comprising an electrolyte dissolved in a nonaqueous solvent and containing at least one compound represented by the formula (I) in an amount of from 0.01 to 10% by mass of the nonaqueous electrolytic solution; a lithium battery containing the electrolytic solution and excellent in low-temperature and high-temperature cycle property; and a formyloxy group-containing compound having a specific structure which is used in lithium batteries, etc.
(wherein X represents an alkylene group, an alkenylene group or an alkynylene group; R
1
represents H, an alkyl group, a cycloalkyl group or a group of the formula (II); R
2
represents an alkyl group, a cycloalkyl group or a group of the formula (II); R
3
to R
7
each represent H, F, a methoxy group or an ethoxy group.)
本发明揭示了一种用于锂二次电池的非水电解质溶液,其中包含在非水溶剂中溶解的电解质,并且含有至少一种化合物,该化合物由公式(I)表示,并占非水电解质溶液的质量的0.01%至10%; 一种锂电池,其中包含该电解质溶液,并具有低温和高温循环性能优异的特点;以及一种具有特定结构的甲氧基羰基基团的化合物,该化合物用于锂电池等中。(其中X代表烷基,烯基或炔基;R1代表H,烷基,环烷基或公式(II)的基团;R2代表烷基,环烷基或公式(II)的基团;R3至R7每个代表H,F,甲氧基或乙氧基。)