| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium secondary battery with high safety and high reliability. SOLUTION: Aluminum or an aluminum alloy is used as a positive current collector, and an electrolyte or a polymer gel electrolyte contains at least one of compounds represented by formula I, formula II and formula III, and a solvent having structure analogous to sulfolane or sultone is used as the main solvent to form a nonaqueous electrolyte battery. Formula I: LiOS2Rf1, formula II: LiN(SO2Rf2)(SO2Rf3), and formula III: LiC(SO2Rf4)(SO2Rf5)(SO2Rf6). (In formulas, Rf1-6 are -F, -CkF2k+1, -OCmH2mCn, k=1-5, m=1 or 2, and n=1-5). |
