Facile preparation of MnO/nitrogen-doped porous carbon nanotubes composites and their application in energy storage
Facile preparation of MnO/nitrogen-doped porous carbon nanotubes composites and their application in energy storage
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DOI：
10.1016/j.jpowsour.2019.04.026
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发表时间：
2019-06
影响因子：
9.2
通讯作者：
P. Mu;Wenyan Ma;Yongbo Zhao;Chong Zhang;Shijie Ren;Feng Wang;Chao Yan;Yu Chen;Jinghui Zeng-Jingh
中科院分区：
文献类型：
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作者：
P. Mu;Wenyan Ma;Yongbo Zhao;Chong Zhang;Shijie Ren;Feng Wang;Chao Yan;Yu Chen;Jinghui Zeng-Jingh
本文报道了一种利用三苯胺和甲醛二甲缩醛在三价铁促进下的Friedel-Crafts反应制备高交联管状多孔聚合物前驱体的方法，制备了MnO/氮掺杂多孔碳纳米管复合材料。由于负载的MnO在氮掺杂的多孔碳纳米管表面均匀分布，具有较高的氧化还原活性，一维氮掺杂的多孔碳纳米管具有较大的比表面积和丰富的孔结构，因此由MnO/氮掺杂的多孔碳纳米管复合材料制备的锂离子电池具有较高的电化学性能，包括在100 mA g-1下652 mAh g-1的可逆容量和在500 mA g-1下在250次充放电循环后512 mAh g-1的容量保持率的优异循环稳定性。结果表明，这种MnO/氮掺杂多孔碳纳米管复合材料是一种有希望的高性能储能器件的候选者。
We report a novel approach to prepare MnO/nitrogen-doped porous carbon nanotubes composites by using a hypercrosslinked tubular porous polymer precursor, which is obtained by a facile strategy of Friedel-Crafts reaction of triphenylamine and formaldehyde dimethyl acetal promoted by ferric trichloride. Owing to the high redox activity of the loaded MnO with uniform distribution on the nitrogen-doped porous carbon nanotubes surface, the enhanced surface area, and the plentiful porous structures of the one dimensional nitrogen-doped porous carbon nanotubes, the lithium-ion batteries fabricated from the MnO/nitrogen-doped porous carbon nanotubes composites exhibit a high electrochemical performance, including a reversible capacity of 652 mAh g−1at 100 mA g−1and an excellent cycling stability with a capacity retention of 512 mAh g−1at 500 mA g−1after 250 charge−discharge cycles. The result demonstrates that this kind of MnO/nitrogen-doped porous carbon nanotubes composites are promising candidates for high performance energy storage devices.