材料科学
碳化
超级电容器
木质素
碳纳米纤维
纳米纤维
微观结构
比表面积
纤维
聚丙烯腈
静电纺丝
化学工程
多孔性
复合材料
电容
电极
有机化学
聚合物
碳纳米管
化学
扫描电子显微镜
催化作用
工程类
物理化学
作者
Jialing Zou,Mengzhu Li,Jiahui Zhang,Yong Qi,Jianxiao Yang,Aihua Zhang,Jinchao Cao
摘要
Abstract In this work, the content of lignin, pitch, and PAN as well as the preparation process would be systematically controlled in order to prepare carbon nanofibers (CNFs) with cross‐linked structure, high specific surface area, and good flexibility. The evolution of nanofibers with different lignin contents during stabilization and carbonization were explored, and the properties of the resultant CNFs as supercapacitor self‐supported electrodes were compared. The results indicated that with the increase of lignin content, not only cross‐linked structures were introduced in CNFs, but also the flexibility were obviously improved, accomplishing for supercapacitor self‐supported electrodes. Moreover, CNFs with different content of lignin varied in fiber morphology and microstructure, harvesting developed porous structure in CNFs. PPL3‐CNF prepared with adding lignin at a mass ratio of 3/7 into a concentration of 10 wt.% pitch/PAN solution presented the highest specific surface area of 949 m2 g −1 , exhibiting an excellent specific capacitance of 190.7 F g −1 at 0.2 A g −1 .
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