The electrochemical performance of NiO nanowalls/Ni anode in half-cell and full-cell sodium ion batteries

Abstract

NiO nanowalls with mean diameter of 300nm and mean thickness of 30nm have been successfully grown on Ni foam via an electrochemical corrosion approach and subsequent sintering. The NiO-Ni shows superior electrochemical performance as anode for sodium ion batteries owing to the morphological and architectural advantages. It delivers high charge/discharge capacity of 491/501mAhg−1 after 100 cycles at specific capacity of 300mAhg−1 in a half cell. When matching with a Na3V2(PO4)3 cathode, it can also deliver charge/discharge capacity of 103/108mAhg−1 after 50 cycles.