One-Pot Synthesis and High Electrochemical Performance of CuS/Cu(1.8)S Nanocomposites as Anodes for Lithium-Ion Batteries

CuS and Cu(1.8)S have been investigated respectively as anodes of lithium-ion batteries because of their abundant resources, no environment pollution, good electrical conductivity, and a stable discharge voltage plateau. In this work, CuS/Cu(1.8)S nanocomposites were firstly prepared simultaneously by the one-pot synthesis method at a relatively higher reaction temperature 200 °C. The CuS/Cu(1.8)S nanocomposites anodes exhibited a high initial discharge capacity, an excellent reversible rate capability, and remarkable cycle stability at a high current density, which could be due to the nano-size of the CuS/Cu(1.8)S nanocomposites and the assistance of Cu(1.8)S. The high electrochemical performance of the CuS/Cu(1.8)S nanocomposites indicated that the Cu(x)S nanomaterials will be a potential lithium-ion battery anode.