Supercapacitive properties of porous carbon nanofibers via the electrospinning of metal alkoxide-graphene in polyacrylonitrile
Supercapacitive properties of porous carbon nanofibers via the electrospinning of metal alkoxide-graphene in polyacrylonitrile
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DOI：
10.1016/j.matlet.2012.07.093
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发表时间：
2012-11
影响因子：
3
通讯作者：
So Yeun Kim;Bo-Hye Kim;K. Yang;K. Oshida
中科院分区：
文献类型：
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作者：
So Yeun Kim;Bo-Hye Kim;K. Yang;K. Oshida
将极性基团Si O C引入到碳纳米纤维中，并将所得碳纳米复合物（CNFC）电极作为电化学电容器进行评价。对来自原硅酸四乙酯和石墨烯与聚丙烯腈的共混溶液的电纺纳米纤维进行简单的热处理，引入了合适的微孔以容纳许多离子，而没有孔产生步骤，例如氧化活化。用3wt%石墨烯制备的超级电容器电极在6 M KOH水溶液中在400-30，000 Wkg-1的相应范围内显示出144.80Fg-1的高比电容、18.49-10.83Whkg-1的能量密度。的比电容和能量密度分别高2倍和3倍，与原始CNF相比。
The polar group SiOC introduction was made into the carbon nanofibers, and the resulting carbon nanofiber composite (CNFC) electrodes were evaluated as an electrochemical capacitor. Simple thermal treatment of the electrospun nanofibers from the blend solution of tetraethyl orthosilicate and graphene with polyacrylonitrile introduced suitable micropores to accommodate many ions without a pore creation step such as oxidative activation. The supercapacitor electrode prepared with 3wt% graphene showed high specific capacitance of 144.80Fg−1, energy density of 18.49–10.83Whkg−1in the respective range of 400–30,000Wkg−1in 6M KOH aqueous solution. The specific capacitance and energy density were 2 and 3 times higher, respectively, in comparison with pristine CNF.