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题名:
Preparation of High Value Added Activated Carbons from Corncob for Electric Double Layer Capacitors
作者: Zheng, Zhilin1; Du, Xuan2; Zhao, Wei2; Wang, Yi2; Ma, Shuhui2; Geng, Wangchang1
刊名: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
出版日期: 2017-06-01
卷号: 17, 期号:6, 页码:3803-3808
关键词: Electric Double Layer Capacitor ; Corncob ; Activated Carbon ; Pore Structure ; Specific Capacitance
收录类别: SCI
WOS记录号: WOS:000402483900022
DOI: 10.1166/jnn.2017.14013
文章类型: Article
英文摘要: 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.
WOS标题词: Science & Technology ; Physical Sciences ; Technology
类目[WOS]: Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
研究领域[WOS]: Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]: ENERGY DENSITY SUPERCAPACITORS ; POROUS CARBON ; PERFORMANCE ; STARCH ; FIBERS
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
语种: 英语
ISSN号: 1533-4880
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ipe.ac.cn/handle/122111/22655
Appears in Collections:湿法冶金清洁生产技术国家工程实验室_期刊论文

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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

Recommended Citation:
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.
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