Enhancing the electrochemical performance of biomass activated carbon through confining acid red 18 into the nanopores
Chen, Yong1,2; Huang, Jiandi1,2; Ma, Yannan1,2; Xu, Hui1,2
2022-07-01
发表期刊Journal of Electroanalytical Chemistry
ISSN1572-6657
卷号916
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
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
DOI10.1016/j.jelechem.2022.116359
收录类别EI ; SCIE
语种英语
WOS研究方向Chemistry ; Electrochemistry
WOS类目Chemistry, Analytical ; Electrochemistry
WOS记录号WOS:000804546600005
出版者Elsevier B.V.
EI入藏号20222012108960
EI主题词Biomass
EI分类号702 Electric Batteries and Fuel Cells ; 704.1 Electric Components ; 761 Nanotechnology ; 802.2 Chemical Reactions ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.1 Organic Compounds ; 804.2 Inorganic Compounds ; 933 Solid State Physics ; 951 Materials Science
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被引频次[WOS]:0   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/158426
专题石油化工学院
通讯作者Chen, Yong; Xu, Hui
作者单位1.Key Lab Low Carbon Energy & Chem Engn, Lanzhou 730050, Gansu, Peoples R China;
2.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Peoples R China
第一作者单位兰州理工大学
通讯作者单位兰州理工大学
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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).
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