| Graphene oxide nanoplatelets as excellent electrochemical active materials for VO2+：VOþ2 and V2+：V3+ redox couples for a vanadium redox flow battery | |
Han Pengxian; Wang Haibo; Liu Zhihong; Xiao Chen; Wen Ma; Jianhua Yao; Yuwei Zhu; Guanglei Cui
| |
| 2011 | |
| 发表期刊 | CARBON
 |
| ISSN | 0008-6223 |
| 卷号 | 49期号:2页码:693-700 |
| 其他摘要 | Graphene oxide nanoplatelets (GONPs) are presented as electrochemical active materials for VO(2+)/VO(2)(+) and V(2+)/V(3+) 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 VO(2+)/VO(2)(+) and V(2+)/V(3+) redox couples, while the pristine graphite only shows a reversible electrocatalytic activity towards VO(2+)/VO(2)(+), suggesting that the V(2+)/V(3+) redox reaction more strongly depends on the oxygen-containing groups attached on graphite surface than does the VO(2+)/VO(2)(+). 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 VO(2+) is faster on the surface of GONP-50 than on the pristine graphite and GNOP-120. (C) 2010 Elsevier Ltd. All rights reserved. |
| 学科领域 | 仿生能源系统 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qibebt.ac.cn/handle/337004/582 |
| 专题 | 仿生与固态能源系统研究组 |
| 推荐引用方式 GB/T 7714 | Han Pengxian,Wang Haibo,Liu Zhihong,等. Graphene oxide nanoplatelets as excellent electrochemical active materials for VO2+：VOþ2 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.,Xiao Chen.,Wen Ma.,...&Guanglei Cui.(2011).Graphene oxide nanoplatelets as excellent electrochemical active materials for VO2+：VOþ2 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+：VOþ2 and V2+：V3+ redox couples for a vanadium redox flow battery".CARBON 49.2(2011):693-700. |
| 条目包含的文件 | 下载所有文件 | |||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Graphene oxide nanop（1467KB） | 开放获取 | CC BY-NC-SA | 浏览 下载 | |||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论