Polythiophene-coated nano-silicon composite anodes with enhanced performance for lithium-ion batteries |
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Authors: | Q T Wang R R Li X Z Zhou J Li Z Q Lei |
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Institution: | 1.Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou,China |
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Abstract: | Herein, a new polythiophene-coated silicon composite anode material was prepared by in situ chemical oxidation polymerization method. The structure of this material was characterized by infrared spectroscopy, which proved that the oxidative polymerization of thiophene occurred mainly in α position. The polythiophene can provide the better electric contact between silicon particles. Therefore, the as-prepared Si/polythiophene composite electrodes achieve better cycling performance than the bare Si anode. The specific capacity of the composite electrode retains 478 mA h g?1 after 50 cycles. |
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