Coal based activated carbon nanofibers prepared by electrospinning
Coal based activated carbon nanofibers prepared by electrospinning
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DOI：
10.1039/c4ta00069b
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发表时间：
2014-05
影响因子：
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通讯作者：
Hongyang Zhao;Luxiang Wang;Dianzeng Jia;Wei Xia;Jun Li;Zaiping Guo
中科院分区：
文献类型：
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作者：
Hongyang Zhao;Luxiang Wang;Dianzeng Jia;Wei Xia;Jun Li;Zaiping Guo
采用静电纺丝法将聚丙烯腈与酸处理后的煤混合，制备了煤基纳米纤维。通过炭化和水蒸气活化进一步得到煤基活性炭纤维。研究了酸处理对原煤的影响，以解释在各种溶剂中溶解度增加的原因。煤在N，N-二甲基甲酰胺中的溶解度高达6.6wt%。研究了煤基活性炭纤维毡作为超级电容器电极材料的电化学性能。该无粘合剂电极在1 A g-1的电流密度下显示出230 F g-1的比电容，并且在1000次循环后显示出97%的优异的容量保持率。
Coal based nanofibers were prepared by electrospinning a mixture of polyacrylonitrile and acid treated coal. Coal based activated carbon fibers were further obtained by carbonization and steam activation. The effects of acid treatment on raw coal were studied to explain the enhanced solubility in various solvents. The solubility of coal was as high as 6.6 wt% in N,N-dimethylformamide. The electrochemical performance of supercapacitor electrodes using coal based activated carbon fiber mats was then studied. This binder-free electrode showed a specific capacitance of 230 F g−1 at a current density of 1 A g−1 and an excellent capacity retention of 97% after 1000 cycles.