Electrodes with three-dimensional (3D) nanostructure are expected to improve the energy and power densities per footprint area of lithium ion microbatteries. Herein, we report a large-scale synthesis of a SnO 2/α-Fe2O3 composite nanotube array on a stainless steel substrate via a ZnO nanowire array as an in situ sacrificial template without using any strong acid or alkali. Importantly, both SnO 2 and α-Fe2O3 contribute to the lithium storage, and the hybridization of SnO2 and α-Fe 2O3 into an integrated nanotube structure provides them with an elegant synergistic effect when ...
