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Synthesis of nanosized Si composite anode material for Li-ion batteries

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Abstract

A simple method was proposed to prepare nanosized Si composite anode materials for lithium-ion (Li-ion) batteries. The preparation started with the shock-type ball milling of silicon in liquid media of polyacrylonitrile (PAN)/dimethylformamide (DMF) solution, forming slurry where the nano-Si particles were uniformly dispersed, followed by the drying of the slurry to remove DMF. The nanosized Si composite anode material was obtained after the pyrolysis of the mixture at 300 °C where the pyrolyzed PAN provided a conductive matrix to relieve the morphological change of Si during cycling. As-prepared composite presented good cyclability for lithium storage. The proposed process paves an effective way to prepare high performance Si, Sn, Sb and their alloys based composite anode materials for Li-ion batteries.

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Acknowledgement

This work was financially supported by “985” Basic Research Fund (Project No. 985-04-202-1) from Tsinghua University. Authors appreciated the help from Dr. L.N. Zhang, Dr. w.G. Chu and Dr. Z.H. Han from Department of Physics for their assistance of TEM analysis.

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Authors and Affiliations

  1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, People’s Republic of China

    Xiangming He, Weihua Pu, Jianguo Ren, Li Wang, Changyin Jiang & Chunrong Wan

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  1. Xiangming He
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  2. Weihua Pu
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  3. Jianguo Ren
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  4. Li Wang
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  5. Changyin Jiang
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  6. Chunrong Wan
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Correspondence to Xiangming He.

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He, X., Pu, W., Ren, J. et al. Synthesis of nanosized Si composite anode material for Li-ion batteries. Ionics 13, 51–54 (2007). https://doi.org/10.1007/s11581-007-0071-5

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  • DOI: https://doi.org/10.1007/s11581-007-0071-5

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