Manganese dioxide/biocarbon composites with superior performance in supercapacitors

doi:10.1016/j.jelechem.2017.03.025

	Manganese dioxide/biocarbon composites with superior performance in supercapacitors
	Chen, Jiao 1; Qiu, Jianhui 1; Wang, Bin 1; Feng, Huixia 2; Yu, Yanling 1,3,4; Sakai, Eiichi 1
刊名	Journal of Electroanalytical Chemistry
	2017-04-15
卷号	791 页码:159-166
关键词	Capacitance Carbonization Chemical analysis Electrodes Nanosheets Potassium hydroxide Supercapacitor Chemical compositions Electrochemical performance High energy densities KOH-activated Positive electrodes Specific capacitance Three electrode-system Two-electrode systems
ISSN号	15726657
DOI	10.1016/j.jelechem.2017.03.025
英文摘要	In this paper, MnO2/allium-giganteum-like biocarbon (KWB) composites (KWBM) have been prepared by a simple method. First, the biocarbon was derived from sugarcane bagasse by one-step carbonization and activation method, and then, MnO2 nanosheets anchored on the surface of biocarbon and the KWBM was obtained. The analysis results demonstrated that chemical composition and microstructure of KWBM were closely related to the mass ratio of KMnO4/KWB, and which further impacted electrochemical performance of KWBM profoundly. Especially, the KWBM-4 (the mass ratio of KMnO4/KWB is 2) exhibited a highest specific capacitance of 402 F g− 1 at a current density of 1 A g− 1 in three-electrode system. The asymmetric two-electrode system with outstanding energy density was assembled by employing the KWBM-4 as the positive electrode and the KWB as the negative electrode. The two-electrode system displays a high energy density of 25.9 Wh kg− 1 at a power density of 750 W kg− 1 within a potential rage of 0–1.5 V. Furthermore, the system exhibited high cycle stability with only 5.8% loss of its initial capacitance after 2000 cycles. © 2017
WOS研究方向	Chemistry ; Electrochemistry
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000399513800020
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150220]
专题	教务处（创新创业学院）
作者单位	1.Department of Machine Intelligence and Systems Engineering, Faculty of Systems Engineering, Akita Prefectural University, Akita; 015-0055, Japan; 2.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Chemistry and Chemical Engineering, Harbin Institute of Technology, No.92 West Dazhi Street, Nangang District, Harbin; 150001, China 4.MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, No.92 West Dazhi Street, Nangang District, Harbin; 150001, China;
推荐引用方式 GB/T 7714	Chen, Jiao,Qiu, Jianhui,Wang, Bin,et al. Manganese dioxide/biocarbon composites with superior performance in supercapacitors[J]. Journal of Electroanalytical Chemistry,2017,791:159-166.
APA	Chen, Jiao,Qiu, Jianhui,Wang, Bin,Feng, Huixia,Yu, Yanling,&Sakai, Eiichi.(2017).Manganese dioxide/biocarbon composites with superior performance in supercapacitors.Journal of Electroanalytical Chemistry,791,159-166.
MLA	Chen, Jiao,et al."Manganese dioxide/biocarbon composites with superior performance in supercapacitors".Journal of Electroanalytical Chemistry 791(2017):159-166.