Self-assembly and controllable synthesis of high-rate porous NiCo2S4 electrode materials for asymmetric supercapacitors

doi:10.1016/j.jelechem.2022.116688

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Self-assembly and controllable synthesis of high-rate porous NiCo2S4 electrode materials for asymmetric supercapacitors
	Xu, Hui 1,2; Chen, Pengdong 1,2; Zhu, Yuanqiang 1,2; Bao, Yuanhai 1,2; Ma, Ji 1,2; Zhao, Xuefang 1,2; Chen, Yong 1,2
刊名	Journal of Electroanalytical Chemistry
	2022-09-15
卷号	921
关键词	Citric acid Electric discharges Electrochemical properties Electrodes Mesoporous materials Microspheres Morphology Nickel compounds Self assembly Asymmetric supercapacitor Controllable synthesis Electrode material High electrical conductivity High rate High-rate performance Mesoporous microspheres Self-assembly synthesis Solvent ratios Water-ethanol
ISSN号	1572-6657
DOI	10.1016/j.jelechem.2022.116688
英文摘要	Because of high electrical conductivity, theoretical capacity, and numerous redox pairs, NiCo2S4 has sparked a lot of interest in energy storage. In the paper, with citric acid as inductive agent, NiCo2S4 mesoporous microspheres have been successfully prepared via solvothermal approach by regulating the solvent ratio (water/ethanol ratio = 1/3). It reveals that citric acid dominate in the nucleation and orientated growth of NiCo2S4 and the morphology of NiCo2S4 with different submicron structures can be tuned by the ratio of water/ethanol. The morphology, structure, and electrochemical properties of all NiCo2S4 samples have been investigated. Among these samples, NiCo2S4 mesoporous microspheres display the best electrochemical properties due to their unique mesoporous structure and high specific area. It has a high discharge capacity of 857C/g at a current density of 1 A/g, and exhibit exceptional rate capability (80 % retention even at 20 A/g). Additionally, when employed as positive of an asymmetric NiCo2S4//active carbon (AC) supercapacitor, it yields an energy density of 48.7 Wh kg−1 at 801 W kg−1 and 81 % capacity retention after 10,000 cycles at a current density of 5 A/g. The work describes a quick and easy way to increase the performance of NiCo2S4 electrode materials and demonstrates its potential in practical application. © 2022 Elsevier B.V.
WOS研究方向	Chemistry ; Electrochemistry
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000848235000009
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159720]
专题	石油化工学院
作者单位	1.Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, China 2.College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, China;
推荐引用方式 GB/T 7714	Xu, Hui,Chen, Pengdong,Zhu, Yuanqiang,et al. Self-assembly and controllable synthesis of high-rate porous NiCo2S4 electrode materials for asymmetric supercapacitors[J]. Journal of Electroanalytical Chemistry,2022,921.
APA	Xu, Hui.,Chen, Pengdong.,Zhu, Yuanqiang.,Bao, Yuanhai.,Ma, Ji.,...&Chen, Yong.(2022).Self-assembly and controllable synthesis of high-rate porous NiCo2S4 electrode materials for asymmetric supercapacitors.Journal of Electroanalytical Chemistry,921.
MLA	Xu, Hui,et al."Self-assembly and controllable synthesis of high-rate porous NiCo2S4 electrode materials for asymmetric supercapacitors".Journal of Electroanalytical Chemistry 921(2022).