ICCAS OpenIR
Chemical state of surrounding iron species affects the activity of Fe-N-x for electrocatalytic oxygen reduction
Li, Zhongtao; Wei, Liangqin; Jiang, Wen-Jie; Hu, Zhenpeng; Luo, Hao; Zhao, Weinan; Xu, Tao; Wu, Wenting; Wu, Mingbo; Hu, Jin-Song
2019-08-15
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume251Pages:240-246
AbstractFe-N-C materials with Fe-N-x coordination sites are promising to replace the state-of-the-art Pt-based electrocatalysts for oxygen reduction reaction (ORR) due to high activity and low cost although there is still debate on its activity origin. Herein, we develop a strategy to investigate the role of iron species in Fe-N-C nanohybrids for catalysing ORR by delicately tuning the iron chemical state. By engineering peripheral substituents of iron porphyrin precursors, two Fe-N-C nanohybrids with metallic or oxidized iron species inside are achieved while holding the similar catalyst structure. Systematic experiments and theoretical analysis discover that metallic iron species promote the electrocatalytic activity of Fe-N-x sites for ORR, while oxidative ones inhibit O-2 adsorption on Fe-N-x sites, decreasing their ORR activity. This finding sheds light on unravelling the activity origin in Fe-N-C electrocatalysts for ORR towards their applications in energy devices.
DOI10.1016/j.apcatb.2019.03.046
Indexed BySCI
Language英语
WOS IDWOS:000468014400025
EI Accession Number1873-3883
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82661
Collection中国科学院化学研究所
AffiliationChinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhongtao,Wei, Liangqin,Jiang, Wen-Jie,et al. Chemical state of surrounding iron species affects the activity of Fe-N-x for electrocatalytic oxygen reduction[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,251:240-246.
APA Li, Zhongtao.,Wei, Liangqin.,Jiang, Wen-Jie.,Hu, Zhenpeng.,Luo, Hao.,...&Hu, Jin-Song.(2019).Chemical state of surrounding iron species affects the activity of Fe-N-x for electrocatalytic oxygen reduction.APPLIED CATALYSIS B-ENVIRONMENTAL,251,240-246.
MLA Li, Zhongtao,et al."Chemical state of surrounding iron species affects the activity of Fe-N-x for electrocatalytic oxygen reduction".APPLIED CATALYSIS B-ENVIRONMENTAL 251(2019):240-246.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Zhongtao]'s Articles
[Wei, Liangqin]'s Articles
[Jiang, Wen-Jie]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Zhongtao]'s Articles
[Wei, Liangqin]'s Articles
[Jiang, Wen-Jie]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Zhongtao]'s Articles
[Wei, Liangqin]'s Articles
[Jiang, Wen-Jie]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.