Electrospinning CoS2/carbon nanofibers with enhanced stability as electrode materials for supercapacitors | |
Wang, Zhao; Liu, Chao; Shi, Gaofeng; Wang, Guoying; Zhang, Qi; Zhang, Hongquan; Su, Ying; Yu, Jianglei; Li, Xin; Luo, Fengfang | |
刊名 | Ionics
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2020-11-01 | |
卷号 | 26期号:11页码:5737-5746 |
关键词 | Capacitance Carbon nanofibers Cobalt compounds Current density Electrodes Electrolytes Morphology Sulfur compounds Sulfur determination Supercapacitor Capacitance retention Charge/discharge cycle Cycling performance Discharging process Enhanced stability Number of electrons One-dimensional morphologies Specific capacitance |
ISSN号 | 09477047 |
DOI | 10.1007/s11581-020-03725-z |
英文摘要 | The performance of supercapacitors is strongly influenced by the performance of electrode materials. The cobalt-sulfur compounds are used as electrode materials due to their wide range of sources, low price, and high conductivity. It was found that higher number of electron-hole pairs and higher conductivity could be provided by sulfidation. This is related to the mixing valence of Co in the cobalt sulfur compound, which promotes electron transfer to the electrolyte. During the charging and discharging process, CoS2 is not easy to fall off from the surface of carbon nanofibers, thus increasing the doubling rate and cycling stability, due to the one-dimensional morphology of the interconnected conductive paths and excellent mechanical stability. At the current density of 1Ag−1, the specific capacitance of CoS2-CNFs reaches 488.0Fg−1, over 74% of initial capacitance is retained as the current density improves from 1 to 10Ag−1, and it also exhibits an excellent cycling performance with 91.0% capacitance retention after 1000 times charge/discharge cycles (at the current density of 1Ag−1). © 2020, Springer-Verlag GmbH Germany, part of Springer Nature. |
WOS研究方向 | Chemistry ; Electrochemistry ; Physics |
语种 | 英语 |
出版者 | Springer Science and Business Media Deutschland GmbH |
WOS记录号 | WOS:000556163600002 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/115115] ![]() |
专题 | 石油化工学院 法学院 |
作者单位 | School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou city, China |
推荐引用方式 GB/T 7714 | Wang, Zhao,Liu, Chao,Shi, Gaofeng,et al. Electrospinning CoS2/carbon nanofibers with enhanced stability as electrode materials for supercapacitors[J]. Ionics,2020,26(11):5737-5746. |
APA | Wang, Zhao.,Liu, Chao.,Shi, Gaofeng.,Wang, Guoying.,Zhang, Qi.,...&Yi, Kaiqiang.(2020).Electrospinning CoS2/carbon nanofibers with enhanced stability as electrode materials for supercapacitors.Ionics,26(11),5737-5746. |
MLA | Wang, Zhao,et al."Electrospinning CoS2/carbon nanofibers with enhanced stability as electrode materials for supercapacitors".Ionics 26.11(2020):5737-5746. |
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