Supercapacitors based on 3D network of activated carbon nanowhiskers wrapped-on graphitized electrospun nanofibers

Supercapacitors based on 3D network of activated carbon nanowhiskers wrapped-on graphitized electrospun nanofibers
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基于包裹石墨化电纺纳米纤维的活性炭纳米晶须 3D 网络的超级电容器

DOI:
10.1016/j.jpowsour.2013.06.104
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发表时间:
2013-12
影响因子:
9.2
通讯作者:
Haoqing Hou
Haoqing Hou
中科院分区:
工程技术2区
文献类型:
--
作者:
Huan Hu;Shuiliang Chen;Muddasir Hanif;Haoqing Hou

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由于其循环稳定性和高功率密度,超级电容器弥合了传统介质电容器和电池/燃料电池之间的功率/能量差距。电极材料是制造高性能超级电容器的关键部件。制备了一种具有三维多孔结构的活性碳纳米晶须(ACNWs)包裹石墨化电纺纳米纤维(GENF)网络(ACNWs/GENFN),作为一种新型的无粘结剂超级电容器电极材料。基于ACNW/GENFN复合材料的超级电容器表现出优异的性能,在0.5A−1的电流密度下,比电容达到176.5 F g−1,在800 A g−1的电流密度下,超高功率密度达到252.8 kW/kg−1,10,000次充放电循环后没有电容损失的出色的循环稳定性。
Due to their cycling stability and high power density, the supercapacitors bridge the power/energy gap between traditional dielectric capacitors and batteries/fuel cells. Electrode materials are key components for making high performance supercapacitors. An activated carbon nanowhiskers (ACNWs) wrapped-on graphitized electrospun nanofiber (GENF) network (ACNWs/GENFN) with 3D porous structure is prepared as a new type of binder-free electrode material for supercapacitors. The supercapacitor based on the ACNWs/GENFN composite material displays an excellent performance with a specific capacitance of 176.5 F g−1at current density of 0.5 A g−1, an ultrahigh power density of 252.8 kW kg−1at current density of 800 A g−1and an outstanding cycling stability of no capacitance loss after 10,000 charge/discharge cycles.
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