COMPOSITION COMPRISING A PENTACYCLIC ANION SALT AND THE USE THEREOF AS BATTERY ELECTROLYTE

摘要

The present invention relates to a composition comprising (i) a lithium salt of imidazole compound of formula (I): ## STR2 ##wherein Rf represents a fluorinated alkyl group having 1 to 5 carbon atoms, or a fluorine atom and (ii) at least one cation selected from group A consisting of sodium, potassium, calcium, iron, magnesium, manganese, strontium, vanadium, ammonium, silver, aluminum, arsenic, barium, silicon, cadmium, cobalt, chromium, copper, nickel , lead, antimony, selenium, tin, strontium and titanium and (iii) at least one anion selected from group B consisting of fluoride, chloride, nitrate, sulfate, phosphate, trifluoroacetate, pentafluoroacetate and the anion of formula (II),with all the cation (s) and anion (s) representing greater than 0 and at most 1% by weight of the composition. Its object is the preparation of said composition as well as the use of said composition as battery electrolyte.