Synthesis of Cu@Fe3O4 nanowire arrays electrode for Li-ion batteries

Abstract

Three-dimensional (3D) electrodes of Cu@Fe₃O₄ nanowire arrays for Li-ion batteries are prepared by an electrochemical route. XRD, SEM, TEM and HRTEM are used to characterize the micromorphology. The structures are improved, which is beneficial for the electrochemical performances. The obtained electrodes show a higher initial capacity than the traditional Cu@Fe₃O₄ planar electrodes. Moreover, the 3D electrodes exhibit better long-term cycling stability and an appealing rate capability.