Preparation of chitosan-based porous carbons and their application as electrode materials for supercapacitors

Ji, Qian-Qian, Guo, Pei-Zhi and Zhao, Xiu-Song (2010) Preparation of chitosan-based porous carbons and their application as electrode materials for supercapacitors. Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica, 26 5: 1254-1258. doi:10.3866/PKU.WHXB20100330


Author Ji, Qian-Qian
Guo, Pei-Zhi
Zhao, Xiu-Song
Title Preparation of chitosan-based porous carbons and their application as electrode materials for supercapacitors
Journal name Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica   Check publisher's open access policy
ISSN 1000-6818
Publication date 2010-05
Sub-type Article (original research)
DOI 10.3866/PKU.WHXB20100330
Volume 26
Issue 5
Start page 1254
End page 1258
Total pages 5
Place of publication Beijing, China
Publisher Beijing Daxue Huaxue yu Fenzi Gongcheng Xueyuan
Language chi
Formatted abstract
Four porous carbon samples C-600, C-700, C-800, and C-900 were prepared by the carbonization of chitosan at 600, 700, 800, and 900 °C under N2 and had specific surface areas of 278, 461, 515, and 625 m2· g-1, respectively, based on nitrogen adsorption/desorption measurements. Their electrochemical properties were investigated by cyclic voltammetry (CV) and charge-discharge under constant current. The CV curves of C-800 have a rectangular shape and symmetrical anode and cathode processes. The capacitance of C-600, C-700, C-800, and C-900 are 96, 120, 154, and 28 F· g-1 derived from the galvanostatic charge-discharge curves at a current density of 50 mA· g-1, respectively. The C-800 composite electrode is highly stable and retains its capacitance well as the capacitance decreased by less than 2% after 1000 cycles at a current density of 1 A· g-1. Furthermore, with an increase in the concentration of the electrolyte, the shape of the CV curves of the C-800 based electrode becomes more and more rectangular and the specific current also increases. The relationship between the pore structures of the four porous carbon samples and their properties is discussed based on the experimental results. We suggest that chitosan-based porous carbon has potential application as electrochemical capacitor electrode materials.
Keyword Supercapacitor
Electrode
Porous carbon
Chitosan
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

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