Chemistry Letters, Vol.46, No.10, 1508-1511, 2017
Crystal Structure Analysis and Electrochemical Properties of Chemically Delithiated Li0.13Mn0.54Ni0.13Co0.13O2-delta as Cathode Material for Rechargeable Mg Batteries
Chemically delithiated Li0.13Mn0.54Ni0.13Co0.13O2-delta was synthesized by the reaction of Li1.2Mn0.54Ni0.13Co0.13O2 with NO2BF4. Charge and discharge tests for the Li0.13Mn0.54Ni0.13Co0.13O2-delta/Mg alloy cell showed high discharge capacity of 273mAh g(-1). Since the XANES spectra showed a shift toward lower energy in the transition metals after discharge, the reduction of the main phase was confirmed accompanied with Mg intercalation. Rietveld analysis revealed that the mixed phases of layered rock-salt and Li2MnO3 types were generated by Mg insertion during the discharge process.