Fe3O4/biocarbon composites with superior performance in supercapacitors

doi:10.1016/j.jelechem.2017.09.028

	Fe3O4/biocarbon composites with superior performance in supercapacitors
	Chen, Jiao 1; Qiu, Jianhui 1; Wang, Bin 1; Feng, Huixia 2; Ito, Kazushi 1; Sakai, Eiichi 1
刊名	Journal of Electroanalytical Chemistry
	2017-11-01
卷号	804 页码:232-239
关键词	Capacitance Coprecipitation Electrodes Iron oxides Manganese oxide Potassium hydroxide Scaffolds Supercapacitor Capacitance retention Chemical compositions Chemical coprecipitation method Electrochemical performance Fe3O4 nanoparticles High energy densities KOH-activated Two-electrode systems
ISSN号	15726657
DOI	10.1016/j.jelechem.2017.09.028
英文摘要	In this article, Fe3O4/activated biocarbon (KWB) composites (KBFe) have been prepared via a chemical coprecipitation method. First, the KWB was derived from biomass waste, sugarcane bagasse, and then, the KBFe composites were obtained by using KWB as the scaffolds for Fe3O4 growth. Results indicated that the chemical composition and microstructure of the KBFe were intimately related to the mass ratio of Fe3O4 and KWB, which impacted the electrochemical performance of the KBFe profoundly. Especially, the KBFe-4 (the mass ratio of Fe3O4/KWB is 1) displayed the highest specific capacitance of 342 F g− 1 at a current density of 1 A g− 1. Furthermore, the asymmetric two-electrode system based on MnO2/KWB composite (KWBM) as positive electrode and KBFe-4 as negative electrode was successfully assembled with a voltage window of 0–1.6 V, and exhibited high energy density (29.1 Wh kg− 1) and power density (800 W kg− 1), along with excellent cycling stability (89.5% capacitance retention after 1000 cycles). © 2017 Elsevier B.V.
WOS研究方向	Chemistry ; Electrochemistry
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000413880700030
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150587]
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
推荐引用方式 GB/T 7714	Chen, Jiao,Qiu, Jianhui,Wang, Bin,et al. Fe3O4/biocarbon composites with superior performance in supercapacitors[J]. Journal of Electroanalytical Chemistry,2017,804:232-239.
APA	Chen, Jiao,Qiu, Jianhui,Wang, Bin,Feng, Huixia,Ito, Kazushi,&Sakai, Eiichi.(2017).Fe3O4/biocarbon composites with superior performance in supercapacitors.Journal of Electroanalytical Chemistry,804,232-239.
MLA	Chen, Jiao,et al."Fe3O4/biocarbon composites with superior performance in supercapacitors".Journal of Electroanalytical Chemistry 804(2017):232-239.