Manganese dioxide/biocarbon composites with superior performance in supercapacitors

doi:10.1016/j.jelechem.2017.03.025

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Manganese dioxide/biocarbon composites with superior performance in supercapacitors
	Chen, Jiao 2; Qiu, Jianhui 2; Wang, Bin 2; Feng, Huixia 3; Yu, Yanling 1,2,4; Sakai, Eiichi 2
刊名	JOURNAL OF ELECTROANALYTICAL CHEMISTRY
	2017-04-15
卷号	791 页码:159-166
关键词	Biomass-carbon KOH-activated MnO2 nanosheets MnO2 composites Supercapacitors
ISSN号	1572-6657
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 Fg(-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. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	Fundamental Research Funds for the Universities of Gansu[1105ZTC136]
WOS研究方向	Chemistry ; Electrochemistry
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000399513800020
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33299]
专题	石油化工学院教务处（创新创业学院）
通讯作者	Qiu, Jianhui
作者单位	1.Harbin Inst Technol, MIIT Key Lab Crit Mat Technol New Energy Convers, 92 West Dazhi St, Harbin 150001, Peoples R China 2.Akita Prefectural Univ, Fac Syst Engn, Dept Machine Intelligence & Syst Engn, Akita 0150055, Japan 3.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China 4.Harbin Inst Technol, Sch Chem & Chem Engn, 92 West Dazhi St, Harbin 150001, Peoples R 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.