| abstract |
The invention relates to a battery comprising a cathode, an anode and electrolyte between said cathode and anode, in which: - the cathode comprises an oxide containing manganese as active substance; and - the electrolyte contains a lithium imidazolate of formula: (i) in which R, R 1 and R 2 independently of each other represent CN, F, CF 3 , CHF 2, CH 2 F, C 2 HF 4, C 2 H 2 F 3, C 2 H 3 F 2, C 2 F 5, C 3 F 7, C 3 H 2 F 5, C 3 H 4 F 3, C 4 F 9, C 4 H 2 F 7, C 4 H 4 F 5, C 5 F 11, C 3 F 5 OCF 3, C 2 F 4 OCF 3, C 2 H 2 F 2 OCF 3 or CF 2 OCF 3 groups. |