Preparation of High Value Added Activated Carbons from Corncob for Electric Double Layer Capacitors
Zheng, Zhilin1; Du, Xuan2; Zhao, Wei2; Wang, Yi2; Ma, Shuhui2; Geng, Wangchang1
2017-06-01
发表期刊JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
ISSN1533-4880
卷号17期号:6页码:3803-3808
摘要

In this study, corncob-based activated carbons (ACs) were prepared by carbon dioxide (CO2) activation and their use as electrodes in the electrochemical double layer capacitor (EDLC) performed successfully. The effect of activation time (1-7 h) on the surface area and pore structure was detected by nitrogen adsorption-desorption isotherm at 77 K. The electrochemical properties of these corncob-based ACs were evaluated by using cyclic voltammetry (CV), galvanostatic charge-discharge and electrochemical impedance spectroscopy (EIS) studies. The results showed that the surface area increased to the maximum of 757 m(2) g(-1) with the prolonged activation time. However, when the current density was 50 mA g(-1), the specific capacitance reached to the maximum of 178 F g(-1) in 6 mol L-1 KOH solution when the activation time was 5 h. The capacitance was still up to 157 F g(-1) when increasing the current density to 1000 mA g(-1), indicating a high-rate charge-discharge performance. Furthermore, compared with other reported biomass based ACs, corncob-base ACs showed significantly higher surface specific capacitance (SSC) which means the accessibility and efficient utilization of surface area of these ACs.

关键词Electric Double Layer Capacitor Corncob Activated Carbon Pore Structure Specific Capacitance
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1166/jnn.2017.14013
收录类别SCI
语种英语
关键词[WOS]Energy Density Supercapacitors ; Porous Carbon ; Performance ; Starch ; Fibers
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
项目资助者National Natural Science Foundation of China(51302264) ; National Science Foundation for Distinguished Young Scholars of China(51125018) ; One Hundred Talent Program of Chinese Academy of Sciences
WOS记录号WOS:000402483900022
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22655
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Northwestern Polytech Univ, Key Lab Space Appl Phys & Chem, Minist Educ, Sch Sci, Xian 710072, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Zheng, Zhilin,Du, Xuan,Zhao, Wei,et al. Preparation of High Value Added Activated Carbons from Corncob for Electric Double Layer Capacitors[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2017,17(6):3803-3808.
APA Zheng, Zhilin,Du, Xuan,Zhao, Wei,Wang, Yi,Ma, Shuhui,&Geng, Wangchang.(2017).Preparation of High Value Added Activated Carbons from Corncob for Electric Double Layer Capacitors.JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,17(6),3803-3808.
MLA Zheng, Zhilin,et al."Preparation of High Value Added Activated Carbons from Corncob for Electric Double Layer Capacitors".JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 17.6(2017):3803-3808.
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