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 V2O3/Ni2P/C composite structure for excellent performance lithium ion batteries by taking advantage of the high capacity of V2O3 and low potential of Ni2P. The full cell constructed with V2O3/Ni2P/C as anode and commercial LiMn2O4 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.