ELECTROLYTE AND ELECTROCHEMICAL DEVICE

An electrolyte, including: a compound of Formula I, and at least one of a compound of Formula II or a compound of Formula III, R, R, Rand Rare each independently selected from hydrogen, fluoro, substituted or unsubstituted C-Calkyl, substituted or unsubstituted C-Calkenyl, substituted or unsubstituted C-Calkynyl, substituted or unsubstituted C-Caryl, substituted or unsubstituted C-Calkoxy, or substituted or unsubstituted C-Caryloxy, wherein when substituted, the substituent is fluoro, cyano or C-Calkyl; and a, d and f are each independently selected from an integer from 1 to 5, and b, c, e, g, h and i are each independently selected from an integer from 0 to 5.