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Bottom-Up Construction of Active Sites in a Cu-N-4-C Catalyst for Highly Efficient Oxygen Reduction Reaction
Li, Wei; Min, Chungang; Tan, Feng; Li, Zhanping; Zhang, Bingsen; Si, Rui; Xu, Mingli; Liu, Weiping; Zhou, Liexing; Wei, Qingmao; Zhang, Yuzhen; Yang, Xikun
2019-03-01
Source PublicationACS NANO
ISSN1936-0851
Volume13Issue:3Pages:3177-3187
AbstractBottom-up construction of efficient active sites in transition metal-nitrogen-carbon (M-N-C) catalysts for oxygen reduction reaction (ORR) from single molecular building blocks remains one of the most difficult challenges. Herein, we report a bottom-up approach to produce a highly active Cu-N-4-C catalyst with well-defined Cu-N-4 coordination sites derived from a small molecular copper complex containing Cu-N-4 moieties. The Cu-N-4 moieties were found to be covalently integrated into graphene sheets to create the Cu-N-4 active sites for ORR. Furthermore, the activity was boosted by tuning the structure of active sites. We find that the high ORR activity of the Cu-N-4-C catalyst is related to the Cu-N-4 center linked to edges of the graphene sheets, where the electronic structure of the Cu center has the right symmetry for the degenerate pi* orbital of the O-2 molecule. These findings point out the direction for the synthesis of the M-N-C catalysts at the molecular level.
Keywordbottom-up fabrication single molecular building blocks ORR Cu-N-4 active sites orbital symmetry
Indexed BySCI
Language英语
WOS IDWOS:000462950500045
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81303
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Li, Wei,Min, Chungang,Tan, Feng,et al. Bottom-Up Construction of Active Sites in a Cu-N-4-C Catalyst for Highly Efficient Oxygen Reduction Reaction[J]. ACS NANO,2019,13(3):3177-3187.
APA Li, Wei.,Min, Chungang.,Tan, Feng.,Li, Zhanping.,Zhang, Bingsen.,...&Yang, Xikun.(2019).Bottom-Up Construction of Active Sites in a Cu-N-4-C Catalyst for Highly Efficient Oxygen Reduction Reaction.ACS NANO,13(3),3177-3187.
MLA Li, Wei,et al."Bottom-Up Construction of Active Sites in a Cu-N-4-C Catalyst for Highly Efficient Oxygen Reduction Reaction".ACS NANO 13.3(2019):3177-3187.
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