One-Pot Synthesis and High Electrochemical Performance of CuS/CuS Nanocomposites as Anodes for Lithium-Ion Batteries.

CuS and CuS 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/CuS nanocomposites were firstly prepared simultaneously by the one-pot synthesis method at a relatively higher reaction temperature 200 °C. The CuS/CuS 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/CuS nanocomposites and the assistance of CuS. The high electrochemical performance of the CuS/CuS nanocomposites indicated that the CuS nanomaterials will be a potential lithium-ion battery anode.