| Identifying the Active Site in Nitrogen-Doped Graphene for the VO2+/VO2+ Redox Reaction | |
| Department | 固体润滑国家重点实验室 |
Jin JT(金具涛)1,2 ; Fu XG(付小刚)1,3; Liu Q(刘乔)1,2; Liu YR(柳燕如)1; Wei ZY(魏志阳)1; Niu KX(牛可兴)1; Zhang JY(张俊彦)1; Zhang JY(张俊彦)
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| 2013 | |
| Source Publication | ACS Nano
 |
| ISSN | 1936-0851 |
| Volume | 7Issue:6Pages:4764-4773 |
| Abstract | Nitrogen-doped graphene sheets (NGS), synthesized by annealing graphite oxide (GO) with urea at 700-1050 ℃, were studied as positive electrodes in a vanadium redox flow battery. The NGS, in particular annealed at 900 ℃, exhibited excellent catalytic performance in terms of electron transfer (ET) resistance (4.74 ±0.51 and 7.27 ± 0.42 Ω for the anodic process and cathodic process, respectively) and reversibility (ΔE = 100 mV, Ipa/Ipc = 1.38 at a scan rate of 50 mV s_1). Detailed research confirms that not the nitrogen doping level but the nitrogen type in the graphene sheets determines the catalytic activity. Among four types of nitrogen species doped into the graphene lattice including pyridinic-N, pyrrolic-N, quaternary nitrogen, and oxidic-N, quaternary nitrogen is verified as a catalytic active center for the [VO]2+/[VO2]+ couple reaction. A mechanism is proposed to explain the electrocatalytic performance of NGS for the [VO]2+/[VO2]+ couple reaction. The possible formation of a N-V transitional bonding state, which facilitates the ET between the outer electrode and reactant ions, is a key step for its high catalytic activity. |
| Keyword | Graphene Sheets Nitrogen Doping [Vo](2+)/[Vo2](+) Couple Reaction Redox Flow Battery |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1021/nn3046709 |
| Funding Organization | the National Nature Science Foundation (NSFC) of China under award no. 50823008 |
| Indexed By | SCI |
| If | 12.033 |
| Language | 英语 |
| Funding Project | 纳米润滑研究组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4840 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Zhang JY(张俊彦) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Jin JT,Fu XG,Liu Q,et al. Identifying the Active Site in Nitrogen-Doped Graphene for the VO2+/VO2+ Redox Reaction[J]. ACS Nano,2013,7(6):4764-4773. |
| APA | Jin JT.,Fu XG.,Liu Q.,Liu YR.,Wei ZY.,...&张俊彦.(2013).Identifying the Active Site in Nitrogen-Doped Graphene for the VO2+/VO2+ Redox Reaction.ACS Nano,7(6),4764-4773. |
| MLA | Jin JT,et al."Identifying the Active Site in Nitrogen-Doped Graphene for the VO2+/VO2+ Redox Reaction".ACS Nano 7.6(2013):4764-4773. |
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| Identifying the Acti（662KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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