Facile and rapid synthesis of highly porous wirelike TiO2 as anodes for lithium-ion batteries

ACS Applied Materials & Interfaces
H E WangIgor Bello

Abstract

Highly porous wirelike TiO(2) nanostructures have been synthesized by a simple two-step process. The morphological and structural characterizations reveal that the TiO(2) wires typically have diameters from 0.4 to 2 μm, and lengths from 2 to 20 μm. The TiO(2) wires are highly porous and comprise of interconnected nanocrystals with diameters of 8 ± 2 nm resulting in a high specific surface area of 252 m(2) g(-1). The effects of experimental parameters on the structure and morphology of the porous wirelike TiO(2) have been investigated and the possible formation processes of these porous nanostructures are discussed. Galvanostatic charge/discharge tests indicate that the porous wirelike TiO(2) samples exhibit stable reversible lithium ion storage capacities of 167.1 ± 0.7, 152.1 ± 0.8, 139.7 ± 0.3, and 116.1 ± 1.1 mA h g(-1) at 0.5, 1, 2, and 5 C rates, respectively. Such improved performance could be ascribed to their unique porous and 1D nanostructures facilitating better electrolyte penetration, higher diffusion rate of electrons and lithium ion, and variation of accommodated volumes during the charge/discharge cycles.

References

Jan 16, 2003·Journal of the American Chemical Society·Marnix WagemakerFokko M Mulder
Mar 17, 2007·Journal of the American Chemical Society·Marnix WagemakerFokko M Mulder
Mar 1, 2008·Chemical Communications : Chem Comm·Liang-Shu ZhongWei-Guo Song
Oct 27, 2010·Chemical Reviews·Prashant V KamatEmmy J Radich
Jul 2, 2011·Advanced Materials·Hansan LiuGilbert M Brown

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Citations

Mar 8, 2017·ACS Applied Materials & Interfaces·Yi CaiBao-Lian Su
May 7, 2013·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Jun-Bing FanShutao Wang
Jul 6, 2018·ACS Applied Materials & Interfaces·Xiangzhen ZhuYongjun Chen
Dec 2, 2017·ACS Applied Materials & Interfaces·Hong-En WangGuozhong Cao

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