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题名: Electrochemical Capacitance of Composites with MnOx Loaded on the Surface of Activated Carbon Electrodes
作者: Tian Ying1, 2;  Yan Jing-Wang1;  Liu Xiao-Xue1;  Xue Rong1;  Yi Bao-Lian1
关键词: Supercapacitor ;  Manganese oxide ;  Activated carbon ;  Thermal decomposition
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2010-08-01
DOI: 10.3866/PKU.WHXB20100636
卷: 26, 期:8, 页:2151-2157
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Activated carbon/manganese oxide (MnOx) composites were prepared by the thermal decomposition of Mn(NO3)(2) that was impregnated on the surface of activated carbon XC-72 with a specific surface area of 250 m(2) . g(-1) and on YEC-8 with a specific surface area of 1726 m(2) . g(-1) at 200 degrees C. The surface morphology and crystalline structure of the composites were investigated using scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The electrochemical properties of the composites were tested by cyclic voltammetry, galvanostatic charge. discharge, and impedance spectroscopy. We found that alpha-Mn2O3 and alpha-Mn3O4 were formed when the composites were annealed at 200 degrees C. At mass ratios of C and MnOx of 2:1 and 9:1, the specific capacitance of MnOx in the composites of XC-72/MnOx was 499 and 435 F . g(-1) and the specific capacitance of MnOx in the composites of YEC-8/MnOx was 554 and 606 F . g(-1), respectively. This suggests a significant contribution of pseudocapacitance from MnOx to the specific capacitance of the electrode.
关键词[WOS]: MANGANESE OXIDE COMPOSITE ;  SUPERCAPACITOR ;  DEPOSITION ;  NANOTUBE ;  DIOXIDE ;  FILM
语种: 英语
WOS记录号: WOS:000280259900014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142060
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Dalian Jiaotong Univ, Coll Environm & Chem Engn, Dalian 116028, Liaoning, Peoples R China

Recommended Citation:
Tian Ying,Yan Jing-Wang,Liu Xiao-Xue,et al. Electrochemical Capacitance of Composites with MnOx Loaded on the Surface of Activated Carbon Electrodes[J]. ACTA PHYSICO-CHIMICA SINICA,2010,26(8):2151-2157.
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