Polyaniline encapsulated silicon nanocomposite as high-performance anode materials for lithium ion batteries |
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Authors: | Hua-Chao Tao Xue-Lin Yang Lu-Lu Zhang Shi-Bing Ni |
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Institution: | 1. College of Materials and Chemical Engineering, Collaborative Innovation Center for Energy Equipment of Three Gorges Region, Three Gorges University, Yichang, Hubei, 443002, People’s Republic of China
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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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