| 摘要 |
A non-aqueous electrolyte is provided comprising a non-aqueous solvent and a lithium salt, said non-aqueous solvent is containing a mixture of a halogen-substituted ether compound represented by the general formula ÄIÜ: R1-O-R2 (wherein R1 is an alkyl or halogen-substituted alkyl group having 2 or less carbon atoms and R2 is a halogen-substituted alkyl group having 2 to 10 carbon atoms) and at least one sort of another compound, and said solvent obtained by adding the other compound to the halogen-substituted ether compound is capable of dissolving the lithium salt in an amount of not less than 0.5 mol/l, and a lithium secondary battery comprising a cathode that can be doped/undoped with lithium ions, an anode of a lithium metal or alloy or a material that can be doped/undoped with lithium ions and the non-aqueous electrolyte described above. A lithium secondary battery using the non-aqueous electrolyte above is superior in cycle life, for repeating charging/discharging and low-temperature capacity, particularly superior in high-rate capacity, and causes little deterioration of high-rate capacity due to cycles. |
