Magnetic field-induced capacitance change in aqueous carbon-based supercapacitors

doi:10.1016/j.xcrp.2021.100455

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	Magnetic field-induced capacitance change in aqueous carbon-based supercapacitors
	Zhang, Li 1,3; Zeng, Zhenhua 2; Wang, Da-Wei 4; Zuo, Yalu 5; Chen, Jiangtao 1; Yan, Xingbin 1,6
刊名	CELL REPORTS PHYSICAL SCIENCE
	2021-06-23
卷号	2 期号:6
ISSN号	2666-3864
DOI	10.1016/j.xcrp.2021.100455
英文摘要	Carbon-based supercapacitors (SCs) are important electrochemical energy storage devices and are often used in electronic equipment that generates a magnetic field. However, whether the magnetic field affects the charge storage of SCs is unknown. Here, we discover that applying an external magnetic field to carbon-based SCs can induce capacitance change in both aqueous acidic and alkaline electrolytes but not in neutral electrolytes. We further show that, in KOH electrolytes, the competition between the driving force caused by the Lorentz force and the damping force related to the electrolyte conductivity plays a crucial role in affecting the OH- transport under the magnetic field. In H2SO4 electrolytes, the third paramagnetic force generated by the paramagnetic H+ under the magnetic field hinders the H+ transport in addition to the above forces. A quantitative relationship among the limiting current density at the electrode-electrolyte interface, the intensity of the magnetic field, and the concentration and viscosity of electrolytes can therefore be established.
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000665056400013
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148550]
专题	兰州理工大学
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China; 2.Purdue Univ, Davidson Sch Chem Engn, W Lafayette, IN 47907 USA; 3.Lanzhou Univ Technol, Sci Phys, Lanzhou 730050, Peoples R China; 4.Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia; 5.Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China; 6.Sun Yat Sen Univ, Sch Mat Sci & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Li,Zeng, Zhenhua,Wang, Da-Wei,et al. Magnetic field-induced capacitance change in aqueous carbon-based supercapacitors[J]. CELL REPORTS PHYSICAL SCIENCE,2021,2(6).
APA	Zhang, Li,Zeng, Zhenhua,Wang, Da-Wei,Zuo, Yalu,Chen, Jiangtao,&Yan, Xingbin.(2021).Magnetic field-induced capacitance change in aqueous carbon-based supercapacitors.CELL REPORTS PHYSICAL SCIENCE,2(6).
MLA	Zhang, Li,et al."Magnetic field-induced capacitance change in aqueous carbon-based supercapacitors".CELL REPORTS PHYSICAL SCIENCE 2.6(2021).