Achieving High-Energy Full-Cell Lithium-Storage Performance by Coupling High-Capacity V2O3 with Low-Potential Ni2P Anode

To optimize the potential window and maximize the utilization of the capacity of both negative and positive electrodes, rational design of electrode materials are critically important in full-cell construction of rechargeable batteries. In this work, we propose and fabricate a carbon-confined V 2 O 3 /Ni 2 P/C composite structure for excellent performance lithium ion batteries by taking advantage of the high capacity of V 2 O 3 and low potential of Ni 2 P. The full cell constructed with V 2 O 3 /Ni 2 P/C as anode and commercial LiMn 2 O 4 as cathode offers a record high energy density of 361.5 Wh kg –1 and excellent cycle stability, outperforming the state-of-the-art work reported in literature.