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Formation mechanism of spinel LiTi2O4 prepared by carbon thermal reduction reaction

Authors
  • Yang, Guijun
  • Yang, Jianwen
  • Zhang, Lingzhi
Publication Date
Jan 01, 2015
Source
GuangZhou Institute of Energy Conversion
Keywords
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Abstract

The formation mechanism of LiTi2O4, prepared by a carbon thermal reduction reaction using Li2CO3 and TiO2 (anatase) as starting materials and acetylene black as a reducing agent, was investigated by in situ variable temperature X-ray diffraction and thermal gravimetric analysis/differential scanning calorimetry system. It was found that the cooling rate significantly impacts on obtaining pure phase LiTi2O4 sample after forming LiTi2O4 product during the carbon thermal reduction reaction. LiTi2O4 has excellent cycling stability, remaining a specific capacity of 126.6/111.9 mA h g(-1) with a capacity fade of 5.1%/3.1% at 0.5C/1C rate after 200 cycles.

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