| 摘要 |
<p>A nonaqueous electrolytic solution which contains a ketone compound represented by the following general formula (I): (I) wherein R?1 and R2¿ each represents linear or branched alkyl and R?3, R4, R5, and R6¿ each represents hydrogen or linear or branched alkyl, provided that R?1 and R4¿ may be bonded to each other to form a cycloalkanone ring in cooperation with the propanone skeleton bonded to these, or at least two of the alkyl represented by R2, the alkyl represented by R5, a branch of the alkyl represented by R1, and a branch of the alkyl represented by R4 may be bonded to each other to form a cycloalkane ring, or the alkyl represented by R1 and the alkyl represented by R2 may be bonded to each other and/or the alkyl represented by R4 and the alkyl represented by R5 may be bonded to each other to form a cycloalkane ring. The nonaqueous electrolytic solution is advantageously utilizable as a constituent material in the production of a lithium secondary battery excellent in cell characteristics and suitability for cycles.</p> |
