Hierarchical porous carbon foam supported on carbon cloth as high-performance anodes for aqueous supercapacitors

doi:10.1016/j.jpowsour.2019.227066

	Hierarchical porous carbon foam supported on carbon cloth as high-performance anodes for aqueous supercapacitors
	Zhang, Jie 1,3; Li, Wenli 1,3; Shifa, Tofik Ahmed 2; Sun, Jiangbo 1; Jia, Chuqiao 1; Zhao, Yumin 1; Cui, Yanbin 1,3
刊名	JOURNAL OF POWER SOURCES
	2019-11-01
卷号	439 页码:7
关键词	Electro-etching Porous carbon foam Binder-free electrode High-voltage supercapacitor
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2019.227066
英文摘要	Carbon anodes have been widely utilized for the fabrication of high-performance asymmetric supercapacitors. However, they generally suffer from unsatisfactory energy density due to low specific capacitance arising from inferior conductivity and insufficient ionic diffusion rate. Here a surface modification method is conducted after the annealing of ZIF-67 precursor to produce hydrophilic, porous and heteroatom-doped carbon foam. On top of enhanced area capacitance, widened voltage window of -1.3-0V (vs saturated calomel electrode) can be achieved through electrochemical reduction to suppress the hydrogen evolution reaction. The optimized reduced porous carbon foam on carbon cloth exhibits a maximum area capacitance of 1049 mF/cm(2) at an applied current density of 12 mA/cm(2) with excellent capacitance retention of 98.4% after 6000 charge-discharge cycles at 15 mA/cm(2). By well pairing with hierarchical MnO2/CC cathode, a 2.3 V asymmetric supercapacitor in neutral aqueous Na2SO4 electrolyte is assembled, which delivers an exceptional energy density of up to 10.07 mWh/cm(3). The procedure in this paper for carbonaceous material to simultaneously achieve considerable capacitance and enlarged voltage window can open up a wider prospect toward design of anodes for high-performance aqueous supercapacitor.
资助项目	Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2019-A-03] ; Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences[COM2016A003]
WOS关键词	METAL-ORGANIC FRAMEWORKS ; OPERATING VOLTAGE ; IN-SITU ; OXYGEN ; EFFICIENT ; NITROGEN ; HYBRID ; NANOPARTICLES ; FABRICATION ; ELECTRODES
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000494891700033
资助机构	Fund of State Key Laboratory of Multiphase Complex Systems ; Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/39053]
专题	中国科学院过程工程研究所
通讯作者	Cui, Yanbin
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Lulea Univ Technol, Dept Engn Sci & Math, Expt Phys & Mat Sci Div, Lulea, Sweden 3.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jie,Li, Wenli,Shifa, Tofik Ahmed,et al. Hierarchical porous carbon foam supported on carbon cloth as high-performance anodes for aqueous supercapacitors[J]. JOURNAL OF POWER SOURCES,2019,439:7.
APA	Zhang, Jie.,Li, Wenli.,Shifa, Tofik Ahmed.,Sun, Jiangbo.,Jia, Chuqiao.,...&Cui, Yanbin.(2019).Hierarchical porous carbon foam supported on carbon cloth as high-performance anodes for aqueous supercapacitors.JOURNAL OF POWER SOURCES,439,7.
MLA	Zhang, Jie,et al."Hierarchical porous carbon foam supported on carbon cloth as high-performance anodes for aqueous supercapacitors".JOURNAL OF POWER SOURCES 439(2019):7.