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Insight into the Camel-to-Bell Transition of Differential Capacitance in Ionic Liquid-Based Supercapacitors | |
Gan, Zhongdong1,2; Wang, Yanlei1,3; Lu, Yumiao1; Qin, Jingyu1,5; Nie, Yi1,4; He, Hongyan1,3 | |
2022-08-12 | |
Source Publication | CHEMELECTROCHEM
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ISSN | 2196-0216 |
Volume | 9Issue:15Pages:8 |
Abstract | Understanding ionic liquid (IL)-electrode interface is of great significance to the design of electrochemical systems. Herein, the electrical double layer (EDL) structure and charging process of the supercapacitor with ILs were investigated by engineering the cation-anion and IL-electrode interaction through molecular dynamics simulations coupled with the constant potential method. A camel-to-bell shape transition of differential capacitance was identified when the cation-anion or IL-electrode interaction decreased, manifesting the sensitive responses of EDL structure and charging mechanism to the varying interactions. Moreover, the identified camel-to-bell transition could lead to the rise of differential capacitance and energy density in the low working voltage. These findings can help guide the molecular design for high-performance IL-based supercapacitors and other electrochemical devices where the IL-electrode interfaces are crucial. |
Keyword | charging mechanism electrical double layer ionic liquids molecular dynamics simulations supercapacitor |
DOI | 10.1002/celc.202200274 |
Language | 英语 |
WOS Keyword | ELECTRICAL DOUBLE-LAYER ; MOLECULAR INSIGHTS ; CARBON SUPERCAPACITORS ; SIMPLE EXTENSION ; ENERGY-STORAGE ; GLASSY-CARBON ; LENGTH SCALE ; MODEL ; DYNAMICS ; CHARGE |
Funding Project | National Key R&D Program of China[2021YFB3802600] ; National Natural Science Foundation of China[22078322] ; National Natural Science Foundation of China[21922813] ; National Natural Science Foundation of China[22178344] ; Youth Innovation Promotion Association of CAS[2021046] ; Youth Innovation Promotion Association of CAS[Y2021022] ; Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2021-A-10] ; Project of State Key Laboratory of Treatments and Recycling for Organic Effluents by Adsorption in Petroleum and Chemical Industry, Soochow University[SDHY2114] |
WOS Research Area | Electrochemistry |
WOS Subject | Electrochemistry |
Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Fund of State Key Laboratory of Multiphase Complex Systems ; Project of State Key Laboratory of Treatments and Recycling for Organic Effluents by Adsorption in Petroleum and Chemical Industry, Soochow University |
WOS ID | WOS:000835485400001 |
Publisher | WILEY-V C H VERLAG GMBH |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/54407 |
Collection | 中国科学院过程工程研究所 |
Corresponding Author | Wang, Yanlei; He, Hongyan |
Affiliation | 1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, CAS Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China 2.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Zhengzhou Inst Emerging Ind Technol, Zhengzhou 450000, Peoples R China 5.Soochow Univ, State Key Lab Treatments & Recycling Organ Efflue, Suzhou 215123, Peoples R China |
First Author Affilication | Center of lonic Liquids and Green Engineering |
Corresponding Author Affilication | Center of lonic Liquids and Green Engineering |
Recommended Citation GB/T 7714 | Gan, Zhongdong,Wang, Yanlei,Lu, Yumiao,et al. Insight into the Camel-to-Bell Transition of Differential Capacitance in Ionic Liquid-Based Supercapacitors[J]. CHEMELECTROCHEM,2022,9(15):8. |
APA | Gan, Zhongdong,Wang, Yanlei,Lu, Yumiao,Qin, Jingyu,Nie, Yi,&He, Hongyan.(2022).Insight into the Camel-to-Bell Transition of Differential Capacitance in Ionic Liquid-Based Supercapacitors.CHEMELECTROCHEM,9(15),8. |
MLA | Gan, Zhongdong,et al."Insight into the Camel-to-Bell Transition of Differential Capacitance in Ionic Liquid-Based Supercapacitors".CHEMELECTROCHEM 9.15(2022):8. |
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