材料科学
静电纺丝
多孔性
活性炭
电化学
碳纳米纤维
纳米纤维
电极
化学工程
电容器
聚苯胺
复合材料
化学
聚合
聚合物
有机化学
碳纳米管
吸附
电压
物理
工程类
量子力学
物理化学
作者
Geon‐Hyoung An,Hyo‐Jin Ahn
出处
期刊:Carbon
[Elsevier]
日期:2013-12-01
卷期号:65: 87-96
被引量:89
标识
DOI:10.1016/j.carbon.2013.08.002
摘要
Activated porous carbon nanofibers (CNFs) with three different types of porous structures, which were controlled to contain 1, 4, and 8 wt% of Sn–poly(vinylpyrrolidone) (PVP) precursors in the core region and 7 wt% polyaniline (PAN)–PVP precursors in the shell region during electrospinning, were synthesized using a co-electrospinning technique with H2-reduction. The formation mechanisms of activated porous CNF electrodes with the three different types of samples were demonstrated. The activated porous CNFs, for use as electrodes in high-performance electrochemical capacitors, have excellent capacitances (289.0 F/g at 10 mV/s), superior cycling stability, and high energy densities; these values are much better than those of the conventional CNFs. The improved capacitances of the activated porous CNFs are explained by the synergistic effect of the improved porous structures in the CNF electrodes and the formation of activated states on the CNF surfaces.
科研通智能强力驱动
Strongly Powered by AbleSci AI