Enhancing the electrochemical performance of biomass activated carbon through confining acid red 18 into the nanopores

doi:10.1016/j.jelechem.2022.116359

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	Enhancing the electrochemical performance of biomass activated carbon through confining acid red 18 into the nanopores
	Chen, Yong 1,2; Huang, Jiandi 1,2; Ma, Yannan 1,2; Xu, Hui 1,2
刊名	Journal of Electroanalytical Chemistry
	2022-07-01
卷号	916
关键词	Activated carbon Azo dyes Electrolytes Nanopores Porous materials Potassium hydroxide Redox reactions Supercapacitor Acid red Biomass activated carbon Carbon-based Confine Electrochemical performance Energy density Lower energies Porous carbons Redox electrolytes Redox mediators
ISSN号	1572-6657
DOI	10.1016/j.jelechem.2022.116359
英文摘要	The limitation of low energy density of carbon-based supercapacitors can be broken through introducing redox mediators into the electrolyte. Herein, biomass porous carbon CPPS-2 with a high specific surface area of 1649 m2/g was prepared by KOH activation. Capitalizing on the adsorption property of porous carbon, redox mediator, acid red 18 (AR18), was confined into the nanopores of CPPS-2 to fabricate the CPPS-2-18 electrode. After adsorbing 2.72 mg AR18, the specific capacitance of CPPS-2-18 is 568F/g at a current density of 1 A/g in 1 M H2SO4, which is as same as that of CPPS-2 in 1 M H2SO4 + 10 mM AR18, however, the rate performance and coulombic efficiency of CPPS-2-18 are higher than those of CPPS-2. The results reveal that the redox reaction in nanopores of CPPS-2-18 is more reversible than that on the surface of CPPS-2. Meanwhile, the symmetric supercapacitor based on CPPS-2-18 achieves a maximum energy density of 23Wh/kg and power density of 6000 W/kg. Besides, the self-discharging behavior of CPPS-2 is restrained by confining AR18 into the nanopores. © 2022
WOS研究方向	Chemistry ; Electrochemistry
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000804546600005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158426]
专题	石油化工学院
作者单位	1.School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China 2.Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Chen, Yong,Huang, Jiandi,Ma, Yannan,et al. Enhancing the electrochemical performance of biomass activated carbon through confining acid red 18 into the nanopores[J]. Journal of Electroanalytical Chemistry,2022,916.
APA	Chen, Yong,Huang, Jiandi,Ma, Yannan,&Xu, Hui.(2022).Enhancing the electrochemical performance of biomass activated carbon through confining acid red 18 into the nanopores.Journal of Electroanalytical Chemistry,916.
MLA	Chen, Yong,et al."Enhancing the electrochemical performance of biomass activated carbon through confining acid red 18 into the nanopores".Journal of Electroanalytical Chemistry 916(2022).