| 摘要 |
There is disclosed an electrolyte for rechargeable batteries with a negative electrode (anode) made of lithium or lithium containing alloys comprising: one or several non-aqueous organic solvents, one or several lithium salts and one or several additives increasing the cycle life of the lithium electrode. The electrolyte solution may comprise at least one solvent or several solvents selected from the group comprising: tetrahydrofurane, 2- methyltetrahydrofurane, dimethylcarbonate, diethylcarbonate, ethylmethylcarbonate, methyl propylcarbonate, methylpropylpropyonate, ethylpropylpropyonate, methylacetate, ethylacetate, propylacetate, dimetoxyethane, 1,3-dioxalane, diglyme (2-methoxyethil ether), tetraglyme, ethylenecarbonate, propylencarbonate, y-butyrolactone, and sulfolane. The electrolyte solution may further comprise at least one salt or several salts selected from the group consisting of lithium hexafluorophosphate (LiPF6), lithium hexafluoroarsenate (LiAsF6), lithium perchlorate (LiClO4), lithium sulfonylimid trifluoromethane (LiN(CF3SO2)2)) and lithium trifluorosultonate (CF3SO3Li) or other lithium salts or salts of another alkali metal or a mixture thereof. Also disclosed is an electrochemical cell or battery with a negative electrode (anode) made of metallic lithium or a lithium-containing alloy, and an electrolyte as described above. |
