1 Department of Materials Science and Engineering, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China. fgao@nju.edu.cn.
Novel tube-in-tube tin dioxide superstructures (TTS) were synthesized with α-Fe2O3 hollow prisms as templates. Due to the special tube-in-tube structure, the SnO2 TTS possess brilliant lithium storage properties.