Dual template method to prepare hierarchical porous carbon nanofibers for high-power supercapacitors
Dual template method to prepare hierarchical porous carbon nanofibers for high-power supercapacitors
复制标题
双模板法制备高功率超级电容器用分级多孔碳纳米纤维
DOI：
10.1007/s10008-013-2166-4
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发表时间：
2013-07
期刊：
影响因子：
--
通讯作者：
况皓
中科院分区：
文献类型：
--
作者：
王先友;敬波;周玲;况皓
采用双模板法对聚丙烯腈基静电纺丝进行碳化和氢氟酸处理，制备出作为电极材料的分级多孔碳纳米纤维。通过改变纺丝溶液中的模板含量来协同地定制分级多孔结构。由含有15/15 wt.%的聚丙烯腈的静电纺丝制备的碳纳米纤维聚甲基丙烯酸甲酯/原硅酸四乙酯的比表面积（699 m2 g-1）和微孔体积（0.196 cm 3 g-1）最大。在6 M KOH电解液中，配备有分层多孔碳纳米纤维的对称超级电容器展示了其170 F g−1的高端比电容，上级倍率性能和高达14.7 kW kg−1的高功率密度输出。循环演变表明，即使在8，000次循环后，在1 A g− 1的电流密度下，电容衰减仅为初始电容的5.8%。碳纳米管优异的电化学性能主要归因于微孔和中孔的优化孔径分布以及丰富的微孔所具有的独特的分级孔结构。
Hierarchical porous carbon nanofibers serving as electrode materials are prepared through carbonization and hydrofluoric acid treatment of polyacrylonitrile-based electrospinning involving dual templates. The hierarchical porous structures are synergistically tailored by varying template contents in the spinning solution. The carbon nanofibers prepared from the electrospinning of polyacrylonitrile containing 15/15 wt.% polymethylmethacrylate/tetraethyl orthosilicate exhibit the largest specific surface area (699 m2g−1) and microporous volume (0.196 cm3g−1). In 6 M KOH electrolyte, a symmetrical supercapacitor equipped with the hierarchical porous carbon nanofibers demonstrates its high-end specific capacitance of 170 F g−1, superior rate capability, and high-power density output up to 14.7 kW kg−1. Cycling evolution indicates capacitance fading is only 5.8 % of initial capacitance at a current density of 1 A g−1even after 8,000 cycles. The excellent electrochemical performances of the carbon nanofiber are mainly ascribed to the optimized pore size distributions of both micropores and mesopores and the unique hierarchical pore structures possessed by abundant micropores.
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影响因子：
10.9
作者：
Ra, E. J.;Raymundo-Pinero, E.;Beguin, F.
通讯作者：
Beguin, F.
影响因子：
--
作者：
I. Chun;D. Reneker;H. Fong;X. Fang;J. Deitzel;N. B. Tan;K. Kearns
通讯作者：
I. Chun;D. Reneker;H. Fong;X. Fang;J. Deitzel;N. B. Tan;K. Kearns
影响因子：
3.7
作者：
Xiao‐Qing Yang;Dingcai Wu;Xiaomei Chen;R. Fu
通讯作者：
Xiao‐Qing Yang;Dingcai Wu;Xiaomei Chen;R. Fu
脱油沥青制备的多孔碳及其超级电容器电化学性能
影响因子：
3
作者：
Zhang, Wenfeng;Huang, Zheng-Hong;Guo, Zhen;Li, Can;Kang, Feiyu
通讯作者：
Kang, Feiyu
影响因子：
10.9
作者：
Hu, ZH;Srinivasan, MP;Ni, YM
通讯作者：
Ni, YM