Facile synthesis of CTAB assisted hierarchical-structure TiO2@SnO2 for lithium storage

Tin oxide (SnO 2 ) with high specific capacity and excellent safety performance has become potential candidate for next generation lithium-ion batteries (LIBs). However, the practical application of SnO 2 is hindered by large volume change and particle aggregation. Herein, a type of three-dimensional (3D) hierarchical porous titanium-based microclews composed of one-dimensional (1D) titanium dioxide (TiO 2 ) nanoribbons and SnO 2 nanoparicles, is synthesized for the first time with the assistance of cationic surfactant , cetyltrimethylammonium bromidewere (CTAB). SnO 2 nanoparticles distribute uniformly on the nanoribbons, and CTAB as growth controller plays a key role in the formation of the uniform and stable hierarchical-structure. The as-synthesized CTAB assisted hierarchical-structure TiO 2 @SnO 2 microclews (CA–TiO 2 @SnO 2 MCs) elelctrode demonstrates outstanding ionic conductivity due to the structure assisting efficient contact between electrode and electrolyte, with a remarkable discharge capacity of 448.3 mAh g −1 after cycling for 500 times at a current density of 500 mA g −1 , and a capacity retention of 558.8 mAh g −1 at 200 mA g −1 after 400 cycles in LIBs.