Abstract
Polyanionic LiTi2(PO4)3 material with 3D framework structure is intensively investigated to be used in lithium ion batteries. However, the LiTi2(PO4)3-based materials suffer from poor electronic conductivity hindering the application as electrode active materials. This work describes an effective and simple strategy to synthesize LiTi2(PO4)3/C core–shell structure without the addition of external carbon sources. This approach is achieved by a simple one-step solid state reaction using organometallic salt as raw material. The as-prepared LiTi2(PO4)3 exhibits uniform and thin carbon coating on the particle surface. The electrochemical properties of the LiTi2(PO4)3/C composite are investigated, and the results demonstrate that the as-prepared LiTi2(PO4)3/C shows good cycling performance and rate capability.
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Acknowledgments
The authors thank the National Natural Science Foundation of China (Grant no. 21203145, 51201128) and the Natural Science Foundation of Shaanxi Province (Grant no. 2014JQ2079) for financial support; the authors also thank Ms. Lu Lu and Ms. Yanzhu Dai for their help in using SEM and TEM at International Center for Dielectric Research (ICDR), Xi’an Jiaotong University.
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Xiong, L., Xiao, X., Xu, Y. et al. Simple thermal decomposition method to synthesize LiTi2(PO4)3/C core–shell composite for lithium ion batteries. J Solid State Electrochem 20, 1889–1894 (2016). https://doi.org/10.1007/s10008-015-3016-3
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DOI: https://doi.org/10.1007/s10008-015-3016-3