Synthesis of sword-like CuSbS2 nanowires as an anode material for sodium-ion batteries

Sword-like CuSbS2 nanowires with [001] preferential growth direction were prepared via a facile solvothermal chemical route. The sharp ends of the CuSbS2 nanowires were induced by the rapid growth of (001) planes. We have investigated electrochemical performance of CuSbS2 nanowires as an active material for anode in Na-ion batteries. CuSbS2 nanowires electrode delivered an initial de-sodiation capacity of 520.5 mA h/g at 30 mA/g and retained 286.7 mA h/g after 50 cycles. A full cell based on CuSbS2 anode and P2-Na2/3Ni1/3Mn1/2Ti1/6O2 cathode was assembled and an energy density of 193 Wh/kg was obtained.