Continuous hollow TiO2 structures with three-dimensional interconnected single crystals and large pore mesoporous shells for high-performance lithium-ion batteries

• DOI: 10.1039/c2ce25833a
• Publication Date: 2012-06-18T15:57:32Z
• Authors: Junyao Shen; Hai Wang; Yu Zhou; Naiqing Ye; Linjiang Wang
• Keywords: Ammonium bromide; Mesoporous organosilica

A continuous hollow TiO2 structure with three-dimensional (3D) interconnected anatase single crystals self-assembled into compact large pore mesoporous shells had been fabricated in this paper. The as-obtained hierarchically micro/nano-structured materials, denoted as CTAB–TiO2, are simply prepared via a hydrothermal method the assistance of cetyltrimethylammonium bromide (CTAB) micelles. results show that both CTAB and thermal treatment played key role forming micro/nano-structure mesopores. It has found rate properties cyclic performance lithium-ion batteries based on annealed A-CTAB–TiO2, were greatly enhanced compared to CTAB–TiO2 electrodes, improvement was largely attributed reduction interfacial resistance due nanocrystal–nanocrystal contact throughout electrode films increased Li-ion diffusion uniform (12.8 nm). low-cost synthesis excellent architecture could provide new direction for developing higher-performance lithium storage electrodes.