Optimized fabrication of NiCr2O4 and its electrochemical performance in half-cell and full-cell lithium ion batteries

摘要

Temperature dependent fabrication of NiCr2O4 is studied and the application of the as-prepared NiCr2O4 in both half-Cell with Li metal anode and full-Cell with LiFePO4 cathode are assessed. When mixing with natural graphite (NG), the NiCr2O4 obtained at 550 degrees C can deliver initial charge and discharge capacities of 795 and 1275.5 mAh g(-1) at a specific current of 150 mA g(-1), maintaining of 939 and 955 mAh g(-1) after 140 cycles. In contrast, after 140 cycles at the same specific current, the NiCr2O4 obtained at 450 degrees C and 650 degrees C can maintain charge/discharge capacities of 800/814 and 523/528 mAh g(-1), respectively. When matching with a LiFePO4 cathode, The NiCr2O4/NG (obtained at 550 degrees C) electrode delivers initial discharge capacity of 285 mAh g(-1), which maintains of 106 mAh g(-1) after 50 cycles at a specific current of 100 mA g(-1). (C) 2016 Elsevier B.V. All rights reserved.