High Voltage Performances of Li[sub 2]NiPO[sub 4]F Cathode with Dinitrile-Based Electrolytes

A sebaconitrile-based electrolyte, 1 M –sebaconitrile (25:25:50 by vol %) exhibits excellent electrochemical stability above 6 V against . To confirm that the electrolyte can work at high voltages, was intentionally charged at 6 V vs . After the 6 V charging, the discharge capacity was 137 mAh/g and the coulomb efficiency was 91%. In addition, this oxidation resistant electrolyte was able to prove that has actually ca. 5.3 V redox potential against Li anode through cyclic voltammetry and charge/discharge cycle test.