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采用热解处理已合成的聚吡咯纳米线实现一维碳纳米纤维的有效合成。在KOH的活化作用下,原始的纤维结构发生变化,获得带状碳纳米结构。对所合成的碳纳米线及碳纳米带进行形貌及结构表征。测试这两种一维碳纳米材料应于于锂离子电池中负极材料的电化学性能。结果表明,一维碳纳米线及一维碳纳米带均表现出较优的循环性能及良好的倍率性能。碳纳米线材料在循环50次后仍保持530 mA·h/g的可逆容量。在前23次充放电循环中,碳纳米带的可逆容量均高于850 mA·h/g,充放电循环到第23次的容量保持率为86%。
The synthesized polypyrrole nanowires were pyrolyzed to realize the efficient synthesis of one-dimensional carbon nanofibers. Under the activation of KOH, the original fiber structure changes, to obtain ribbon carbon nanostructures. The morphology and structure of the synthesized carbon nanowires and carbon nanobelts were characterized. The two-dimensional carbon nanomaterials should be tested for the electrochemical performance of the negative electrode material in Li-ion batteries. The results show that one-dimensional carbon nanowires and one-dimensional carbon nanobelts exhibit better cycling performance and good rate performance. The carbon nanowire material maintains a reversible capacity of 530 mA · h / g after 50 cycles. In the first 23 charge and discharge cycles, the reversible capacity of carbon nanobelt was higher than 850 mA · h / g, and the capacity retention rate of the 23rd cycle of charge and discharge was 86%.