Abstract
A layer-by-layer approach has been developed to synthesize ZnO/SnO 2 composite nanowire arrays on copper substrate. ZnO nanowire arrays have been first prepared on copper substrate through seed-assisted method, and then, the surface of ZnO nanowires have been modified by the polyelectrolyte. After oxidation–reduction reaction, SnO 2 layer has been deposited onto the surface of ZnO nanowires. The as-synthesized ZnO/SnO 2 composite nanowire arrays have been applied as anode for lithium-ion batteries, which show high reversible capacity and good cycling stability compared to pure ZnO nanowire arrays and SnO 2 nanoparticles. It is believed that the improved performance may be attributed to the high capacity of SnO 2 and the good cycling stability of the array structure on current collector.
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