Electrospun porous hierarchical carbon nanofibers with tailored structures for supercapacitors and capacitive deionization

Electrospun porous hierarchical carbon nanofibers with tailored structures for supercapacitors and capacitive deionization
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静电纺多孔分级碳纳米纤维,具有用于超级电容器和电容去离子的定制结构

DOI:
10.1039/c5nj02963e
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发表时间:
2016-04
期刊:
66..New Journal Of Chemistry
影响因子:
--
通讯作者:
Jieshan Qiu
Jieshan Qiu
中科院分区:
其他
文献类型:
--
作者:
Gang Wang;Bingqing Qian;Yuwei Wang;Qiang Dong;Fei Zhan;Jieshan Qiu

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与单一尺寸的多孔碳相比,包含与中孔和/或大孔组合的微孔的分级多孔碳促进通过大孔/中孔的质量传输并增加较小孔的可及性。然而,目前的合成方法不能制造具有独立结构和介孔性的定制分级碳。本工作采用静电纺丝结合聚乙烯吡咯烷酮模板法成功制备了具有宏观二维整体结构的多孔分级碳纳米纤维。研究了这些纳米纤维作为超级电容器电极材料和用于脱盐的垂直流通电容去离子的性能,以确定宏观二维整体材料的结构特征。本工作为制备具有可控分级孔结构的炭提供了一种通用方法,并为炭材料的高级利用提供了新的见解。
Hierarchical porous carbons, which contain micropores combined with mesopores and/or macropores, promote mass transport through the macropores/mesopores and increase the accessibility of smaller pores compared with single-sized porous carbons. However, current synthesis procedures cannot fabricate tailored hierarchical carbons with both the freestanding structure and mesoporosity. In this work, electrospun porous hierarchical carbon nanofibers with a macro-two-dimensional monolithic structure were successfully prepared through electrospinning combined with the poly(vinylpyrrolidone) template method. The performance of these nanofibers as electrode materials for supercapacitors and vertical flow-through capacitive deionization for desalination were studied to determine the structural characteristics of the macro-two-dimensional monolithic material. This work provides a general approach for preparing carbons with controlled hierarchical pore structures and new insights into the advanced utilization of carbon materials.
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