Electrocapacitive properties of supercapacitors based on hierarchical porous carbons from chestnut shell

Cheng, Lulu, Guo, Peizhi, Wang, Rongyue, Ming, , Lufei, Leng, Fangfang, Li, Hongliang and Zhao, X.S. (2014) Electrocapacitive properties of supercapacitors based on hierarchical porous carbons from chestnut shell. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 446 127-133. doi:10.1016/j.colsurfa.2014.01.057


Author Cheng, Lulu
Guo, Peizhi
Wang, Rongyue
Ming, , Lufei
Leng, Fangfang
Li, Hongliang
Zhao, X.S.
Title Electrocapacitive properties of supercapacitors based on hierarchical porous carbons from chestnut shell
Journal name Colloids and Surfaces A: Physicochemical and Engineering Aspects   Check publisher's open access policy
ISSN 0927-7757
1873-4359
Publication date 2014-04-05
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.colsurfa.2014.01.057
Open Access Status Not Open Access
Volume 446
Start page 127
End page 133
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
Three porous carbons CSC-6, CSC-7, and CSC-8 were prepared by the carbonization of zinc chloride-pretreated chestnut shells at 600, 700, and 800°C under N2 atmosphere and had specific surface areas of 1754, 1987, and 1824m2g-1, respectively. The microstructure and surface functional groups of samples CSCs were characterized by thermal gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and Raman spectroscopy. Electrochemical performances of CSCs-based supercapacitors were evaluated by cyclic voltammetry (CV), galvanostatic charge-discharge, self-discharge, cycle stability, and electrochemical impedance spectroscopy (EIS) in two-electrode cells. Comparative studies showed that the CSC-7-based supercapacitor exhibited the best electrochemical performance among all the CSCs-based supercapacitors. At a current density of 0.1Ag-1, the CSCs-based electrodes had the specific capacitances of 42.5, 105.4, and 83.4Fg-1 in 6M KOH solutions for CSC-6, CSC-7, and CSC-8, respectively. With the current density up to 10Ag-1, the CSC-7-based electrode still showed a capacitance as high as 92.0Fg-1. Based on the experimental results, the relationship between the electrochemical properties of the CSCs-based supercapacitors and structural nature of samples CSCs was analyzed and discussed.
Keyword Carbonization
Chestnut shell
Electrode
Porous carbon
Supercapacitor
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID U1232104
15-9-2-118-nsh
2015135
2015GA741009
2012CB722705
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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