Abstract
Polyaniline encapsulated silicon (Si/PANI) nanocomposite as anode materials for high-capacity lithium ion batteries has been prepared by an in situ chemical polymerization of aniline monomer in the suspension of Si nanoparticles. The obtained Si/PANI nanocomposite demonstrates a reversible specific capacity of 840 mAh g−1 after 100 cycles at a rate of 100 mA g−1 and excellent cycling stability. The enhanced electrochemical performance can be due to that the polyaniline (PANI) matrix offers a continuous electrically conductive network as well as enhances the compatibility of electrode materials and electrolyte as a result of suppressing volume stress of Si during cycles and preventing the agglomeration of Si nanoparticles.
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Acknowledgments
This work was supported by the Natural Science Foundation of China (NSFC, 51272128, 51302152, 51302153) and Excellent Youth Foundation of Hubei Scientific Committee (2011CDA093). Moreover, the authors are grateful to Dr. Jianlin Li at Three Gorges University for his kind support to our research.
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Tao, HC., Yang, XL., Zhang, LL. et al. Polyaniline encapsulated silicon nanocomposite as high-performance anode materials for lithium ion batteries. J Solid State Electrochem 18, 1989–1994 (2014). https://doi.org/10.1007/s10008-014-2439-6
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DOI: https://doi.org/10.1007/s10008-014-2439-6