Hybrid CuO/SnO₂ nanocomposites: Towards cost-effective and high performance binder free lithium ion batteries anode materials

Hybrid CuO/SnO₂ nanocomposites are synthesized by a facile thermal annealing method on Cu foils. Compared to pristine CuO and SnO₂ nanostructures, hybrid CuO/SnO₂ nanocomposites exhibit the enhanced electrochemical performances as the anode material of lithium ion batteries (LIBs) with high specific capacity and excellent rate capability. The binder free CuO/SnO₂ nanocomposites deliver a specific capacity of 718 mA h g⁻¹ at a current density of 500 mA g⁻¹ even after 200 cycles. The enhanced electrochemical performances are attributed to the synergistic effect between SnO₂ nanoparticles and CuO nanoarchitectures. Such hybrid CuO/SnO₂ nanocomposites could open up a new route for the development of next-generation high-performance and cost-effective binder free anode material of LIBs for mass production.