Graphene oxide nanoplatelets as excellent electrochemical active materials for VO2+/VO2+ and V2+/V3+ redox couples for a vanadium redox flow battery

doi:10.1016/j.carbon.2010.10.022

QIBEBT-IR > 仿生与固态能源系统研究组

	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
发表期刊	CARBON
卷号	49 期号:2 页码:693-700
摘要	Graphene 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.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.carbon.2010.10.022
关键词[WOS]	GRAPHITE ELECTRODE MATERIALS ; LITHIUM-ION BATTERIES ; CHEMICAL MODIFICATION ; FILMS ; NANOSHEETS ; REDUCTION ; STORAGE ; CARBON ; CELL ; SHEETS
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000285662700041
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/6543
专题	仿生与固态能源系统研究组
作者单位	Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
推荐引用方式 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.