High-Performance Fe-N-Doped Graphene Electrocatalysts with pH-Dependent Active Sites for the Oxygen Reduction Reaction | |
Department | 先进润滑与防护材料研究发展中心 |
Pan FP(潘富平)1,2; Zhao QP(赵秋萍)1; Wang J(汪佳)1; Zhang JY(张俊彦)1; Zhang JY(张俊彦) | |
The second department | 固体润滑国家重点实验室 |
2016 | |
Source Publication | ChemElectroChem |
ISSN | 2196-0216 |
Volume | 2Issue:12Pages:2032-2040 |
Abstract | Advanced Fe–N-doped graphene (FeNG) electrocatalysts are developed for the oxygen reduction reaction (ORR) by annealing a mixture of sustainable and low-cost corn starch, urea, and FeCl3. The Fe–N coordinations and Fe/Fe3C nanoparticles can be controllably achieved through space confinement and pyrolysis temperature-induced effects, respectively. Electrochemical tests show that, compared to the commercial Pt/C catalyst, the ORR half-wave potential of FeNG is 99 mV more positive in KOH and 34 mV more negative in H2SO4, with higher stabilities in both media. More importantly, the ORR mechanisms of FeNG are demonstrated to be diverse in both KOH and H2SO4, owing to the various catalytic centers. The obtained results indicate that the enhanced ORR activity in basic media can mainly be ascribed to quaternary N and Fe/Fe3C sites, whereas the ORR performance in acidic media originates primarily from Fe–NX complexes. The electrocatalytic origin of these species is governed, primarily, by their unique electronic structures and specific environments in different pH solutions. |
Keyword | Active Sites Electrocatalysis Fe-n-doped Graphene Fuel Cells Oxygen Reduction |
Subject Area | 材料科学与物理化学 |
DOI | 10.1002/celc.201500301 |
Funding Organization | the National Key Basic Research and Development (973) Program of China (Grant No. 2013CB632300);the National Natural Science Foundation of China (Grant No. 51275508) |
Indexed By | SCI |
If | 4.136 |
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/362003/19349 |
Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 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 |
Recommended Citation GB/T 7714 | Pan FP,Zhao QP,Wang J,et al. High-Performance Fe-N-Doped Graphene Electrocatalysts with pH-Dependent Active Sites for the Oxygen Reduction Reaction[J]. ChemElectroChem,2016,2(12):2032-2040. |
APA | Pan FP,Zhao QP,Wang J,Zhang JY,&张俊彦.(2016).High-Performance Fe-N-Doped Graphene Electrocatalysts with pH-Dependent Active Sites for the Oxygen Reduction Reaction.ChemElectroChem,2(12),2032-2040. |
MLA | Pan FP,et al."High-Performance Fe-N-Doped Graphene Electrocatalysts with pH-Dependent Active Sites for the Oxygen Reduction Reaction".ChemElectroChem 2.12(2016):2032-2040. |
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