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Graphene oxide nanoplatelets as excellent electrochemical active materials for VO2+/VO2+ and V2+/V3+ redox couples for a vanadium redox flow battery
Han, Pengxian; Wang, Haibo; Liu, Zhihong; Chen, Xiao; Ma, Wen; Yao, Jianhua; Zhu, Yuwei; Cui, Guanglei
2011-02-01
Source PublicationCARBON
Volume49Issue:2Pages:693-700
AbstractGraphene oxide nanoplatelets (GONPs) are presented as electrochemical active materials for VO2+/VO2+ and V2+/V3+ redox couples for a vanadium redox flow battery. The structures and electrochemical properties of GONPs treated at different temperatures were investigated by transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, Raman spectroscopy and cyclic voltammetry. The results indicate that GONPs treated at 50 degrees C (GONP-50) possess highly hydroxylated and carboxylated groups and exhibit an excellent electrocatalytic activity towards VO2+/VO2+ and V2+/V3+ redox couples, while the pristine graphite only shows a reversible electrocatalytic activity towards VO2+/VO2+, suggesting that the V2+/V3+ redox reaction more strongly depends on the oxygen-containing groups attached on graphite surface than does the VO2+/VO2+. With the increase of treatment temperature, the polarization is reduced significantly. GONPs treated at 120 degrees C (GNOP-120) exhibit a lower electrochemical polarization than that of GONP-50 because of relatively higher electrical conductivity despite moderate electrocatalytic activity. The diffusion of VO2+ is faster on the surface of GONP-50 than on the pristine graphite and GNOP-120. (C) 2010 Elsevier Ltd. All rights reserved.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.carbon.2010.10.022
WOS KeywordGRAPHITE ELECTRODE MATERIALS ; LITHIUM-ION BATTERIES ; CHEMICAL MODIFICATION ; FILMS ; NANOSHEETS ; REDUCTION ; STORAGE ; CARBON ; CELL ; SHEETS
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:000285662700041
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/6543
Collection仿生能源与储能系统团队
AffiliationChinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
Recommended Citation
GB/T 7714
Han, Pengxian,Wang, Haibo,Liu, Zhihong,et al. Graphene oxide nanoplatelets as excellent electrochemical active materials for VO2+/VO2+ and V2+/V3+ redox couples for a vanadium redox flow battery[J]. CARBON,2011,49(2):693-700.
APA Han, Pengxian.,Wang, Haibo.,Liu, Zhihong.,Chen, Xiao.,Ma, Wen.,...&Cui, Guanglei.(2011).Graphene oxide nanoplatelets as excellent electrochemical active materials for VO2+/VO2+ and V2+/V3+ redox couples for a vanadium redox flow battery.CARBON,49(2),693-700.
MLA Han, Pengxian,et al."Graphene oxide nanoplatelets as excellent electrochemical active materials for VO2+/VO2+ and V2+/V3+ redox couples for a vanadium redox flow battery".CARBON 49.2(2011):693-700.
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