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Electrochemical Capacitance of Composites with MnOx Loaded on the Surface of Activated Carbon Electrodes
Tian Ying1,2; Yan Jing-Wang1; Liu Xiao-Xue1; Xue Rong1; Yi Bao-Lian1
KeywordSupercapacitor Manganese Oxide Activated Carbon Thermal Decomposition
Source PublicationACTA PHYSICO-CHIMICA SINICA
2010-08-01
DOI10.3866/PKU.WHXB20100636
Volume26Issue:8Pages:2151-2157
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordMANGANESE OXIDE COMPOSITE ; SUPERCAPACITOR ; DEPOSITION ; NANOTUBE ; DIOXIDE ; FILM
AbstractActivated 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.
Language英语
WOS IDWOS:000280259900014
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142060
Collection中国科学院大连化学物理研究所
Affiliation1.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
GB/T 7714
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.
APA Tian Ying,Yan Jing-Wang,Liu Xiao-Xue,Xue Rong,&Yi Bao-Lian.(2010).Electrochemical Capacitance of Composites with MnOx Loaded on the Surface of Activated Carbon Electrodes.ACTA PHYSICO-CHIMICA SINICA,26(8),2151-2157.
MLA Tian Ying,et al."Electrochemical Capacitance of Composites with MnOx Loaded on the Surface of Activated Carbon Electrodes".ACTA PHYSICO-CHIMICA SINICA 26.8(2010):2151-2157.
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