Fabrication and characterization of Cu₂O nanorod arrays and their electrochemical performance in Li-ion batteries

This study is an investigation of the electrochemical performance of Cu₂O nanorods in Li ion battery application. The template-mediated electroplating was applied to fabricate Cu₂O nanorod arrays. The morphological observation shows that the nanorods with 60 nm diam and 450 nm length were grown perpendicularly to the substrate. The cyclic voltammetry sweeping indicates a reversible electrochemical reactivity between Cu ₂O nanorods and Li, and cycling tests show that the nanorod arrays exhibit a capacity of 330 mAhg after 100 cycles. The high capacity and good cycle retention imply that Cu₂O nanorods are a candidate anode material for rechargeable power source.