Design and Preparation of Lotus Root Knot Hierarchical Porous Carbon by Highly Efficient Chemistry Activation for Electric Double Layer Capacitors

doi:10.1002/celc.202101041

	Design and Preparation of Lotus Root Knot Hierarchical Porous Carbon by Highly Efficient Chemistry Activation for Electric Double Layer Capacitors
	Dang, Le 1; Guo, Jia-Kang 1; Kong, Ling-Bin 1,2
刊名	CHEMELECTROCHEM
	2021-10
卷号	8 期号:21 页码:4062-4071
关键词	supercapacitor hierarchical porous carbon lotus root knot biomass double layer capacitor
ISSN号	2196-0216
DOI	10.1002/celc.202101041
英文摘要	In this work, utilizing lotus root knot as raw material, nitrogen and oxygen co-doped hierarchical porous carbon with appropriate heteroatom doping, multi-connected 3D pore structure and suitable pore size distribution were produced by carbonization and chemical activation step. The maximum specific surface area the biochar material reached was 3659 m(2) g(-1). These physical properties exhibit ultrahigh specific capacitance of up to 454.3 F g(-1) in a supercapacitor of the three-electrode system under the current density of 1 A g(-1) and a capacitance retention rate of 81.5 % within the range of 1 similar to 10 A g(-1). Furthermore, the specific capacitance is maintained at 91.5 % of the initial value in a two-electrode system after 10,000 cycles. In a two-electrode system with tetraethylammonium tetrafluoroborate (TEABF(4))/acetonitrile (ACN) solution as the electrolyte. The voltage window attained was 3 V with high energy density of 51.4 Wh kg(-1) under the power density of 750 W kg(-1). These results show that the assembled supercapacitors provide excellent energy and power density at the same time.
WOS研究方向	Electrochemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000704746000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/149958]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Dang, Le,Guo, Jia-Kang,Kong, Ling-Bin. Design and Preparation of Lotus Root Knot Hierarchical Porous Carbon by Highly Efficient Chemistry Activation for Electric Double Layer Capacitors[J]. CHEMELECTROCHEM,2021,8(21):4062-4071.
APA	Dang, Le,Guo, Jia-Kang,&Kong, Ling-Bin.(2021).Design and Preparation of Lotus Root Knot Hierarchical Porous Carbon by Highly Efficient Chemistry Activation for Electric Double Layer Capacitors.CHEMELECTROCHEM,8(21),4062-4071.
MLA	Dang, Le,et al."Design and Preparation of Lotus Root Knot Hierarchical Porous Carbon by Highly Efficient Chemistry Activation for Electric Double Layer Capacitors".CHEMELECTROCHEM 8.21(2021):4062-4071.