Activated nitrogen-doped carbons from polyvinyl chloride for high-performance electrochemical capacitors
Activated nitrogen-doped carbons from polyvinyl chloride for high-performance electrochemical capacitors
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用于高性能电化学电容器的聚氯乙烯活性氮掺杂碳
DOI:
10.1007/s10008-013-2227-8
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发表时间:
2013
影响因子:
2.5
通讯作者:
Qiu, Jieshan
中科院分区:
文献类型:
--
作者:
Zhou, Ying;Zhao, Qiang;Zhang, Xu;Qiu, Jieshan
Activated nitrogen-doped carbons (ANCs) were prepared by carbonization/activation approach using aminated polyvinyl chloride (PVC) as precursor. ANCs exhibit larger porosities and higher specific surface areas than those of their nitrogen-free counterparts for the same KOH/carbon ratio. The specific surface area of ANC-1 is up to 1,398 m2g−1even at a low KOH/carbon ratio of 1:1. Fourier transform infrared spectroscopy investigation of the nitrogen-enriched resin precursor indicates the efficient dehydrochlorination of PVC by ethylenediamine at a low temperature. The nitrogen content and the population of nitrogen functionalities strongly depend on the KOH/carbon ratios and decrease drastically after KOH activation as seen from the elemental and X-ray photoelectron spectroscopy analysis. The surface concentration of N-6 and N-Q almost disappears and the dominant nitrogen groups become N-5 after KOH activation. The highest specific capacitance of ANCs is up to 345 F g−1at a current density of 50 mA g−1in 6 M KOH electrolyte. ANCs also exhibit a good capacitive behavior at a high scan rate of 200 mV s−1and an excellent cyclability with a capacitance retention ratio as high as ∼93 % at a current density of 2,000 mA g−1for 5,000 cycles.
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DOI:
10.1002/chin.201052008
发表时间:
2010-12
期刊:
ChemInform
影响因子:
--
作者:
T. Muraliganth;K. Stroukoff;A. Manthiram
通讯作者:
T. Muraliganth;K. Stroukoff;A. Manthiram
DOI:
10.1007/bf02123988
发表时间:
1992-10
期刊:
Journal of thermal analysis
影响因子:
--
作者:
Z. Ahmad;W. Manzoor
通讯作者:
Z. Ahmad;W. Manzoor
影响因子:
3
作者:
Joo-Hee Hong;Sung-Kyu Hong
通讯作者:
Joo-Hee Hong;Sung-Kyu Hong
影响因子:
4.4
作者:
Fey, GTK;Lee, DC;Kumar, TP
通讯作者:
Kumar, TP
影响因子:
10.9
作者:
Ruisheng Xue;Zeng-min Shen
通讯作者:
Ruisheng Xue;Zeng-min Shen