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A self-assembled 3D urchin-like Ti₀.₈Sn₀.₂O₂–rGO hybrid nanostructure as an anode material for high-rate and long cycle life Li-ion batteries
- Dong, Yutao, Li, Dan, Gao, Chengwei, Liu, Yushan, Zhang, Jianmin
- Journal of materials chemistry A 2017 v.5 no.17 pp. 8087-8094
- anodes, electrochemistry, lithium batteries, nanomaterials, tin dioxide, titanium dioxide
- The controllable synthesis of electrode materials with unique nanostructures, high specific surface areas, and excellent electrochemical performance is crucially demanded for lithium-ion power batteries. In this paper, a 3D urchin-like Ti₀.₈Sn₀.₂O₂–rGO hybrid nanostructure was successfully fabricated by a one-step hydrothermal process based on the coordination principle and molecular self-assembly theory. This novel graphene-supported Ti₀.₈Sn₀.₂O₂ solid solution material efficiently combined the mechanical stability of TiO₂ and high capacity of SnO₂, leading to excellent electrochemical activity and superior cycling stability. High specific capacities of about 430 mA h g⁻¹ at a current density of 0.5 A g⁻¹ and 400 mA h g⁻¹ after 500 cycles at 1 A g⁻¹ with an efficiency of nearly 100% were achieved. This strategy could be applied to develop novel structures as electrode materials with facile synthesis, low cost, and high performance.