Synthesis and Electrochemical Performance of Porous TiO2

doi:10.3724/SP.J.1077.2010.10267

Abstract

Abstract: A kind of nanostructure TiO₂ with large surface area was synthesized successfully by using mesoporous carbon as sacrificial template. The effects of annealing time on the morphologies and electrochemical performances of the as-prepared samples were studied. The as-prepared material was characterized by X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), High-resolution transmission electron microscope (HRTEM), Nitrogen adsorption and desorption experiments and electrochemical measurements systematically. The results show that the as-synthesized TiO₂ is composed of nanoparticles, which has a narrow porous distribution with high specific surface area. It is also found that the sample synthesized at 500℃ for 2 h is pure anatase TiO₂, when the sintering time is prolonged to 12 h, there is a trace amount of rutile phase coexisted with the anatase phase. However, the sample sintered for 12 h exhibits higher initial capacity than that of the sample sintered for 2 h, which may be caused by different crystallization of samples.

Key words: TiO₂, mesoporous carbon, lithium ion batteries

CLC Number:

TM911

JIA Wei, XU Mao-Wen, BAO Shu-Juan, JIA Dian-Zeng. Synthesis and Electrochemical Performance of Porous TiO₂[J]. Journal of Inorganic Materials, 2010, 25(12): 1335-1339.

References

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Synthesis and Electrochemical Performance of Porous TiO₂

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