Incorporation of Cu-N-x cofactors into graphene encapsulated Co as biomimetic electrocatalysts for efficient oxygen reduction

doi:10.1039/c8nr06538a

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院强磁场科学中心

	Incorporation of Cu-N-x cofactors into graphene encapsulated Co as biomimetic electrocatalysts for efficient oxygen reduction
	Yang, Yang 1,2; Wang, Changlai 1,2; Gao, Shiqi 1,2; Mao, Kaitian 1,2; Xia, Guoliang 1,2; Lin, Zhiyu 1,2; Jiang, Peng 1,2; Hu, Lin 3; Chen, Qianwang 1,2,3
刊名	NANOSCALE
	2018-12-07
卷号	10 期号:45 页码:21076-21086
ISSN号	2040-3364
DOI	10.1039/c8nr06538a
通讯作者	Chen, Qianwang(cqw@ustc.edu.cn)
英文摘要	Unlike metals with incomplete d-shells such as Pt and Fe, copper (Cu) with a filled d-electron shell is generally regarded as a sluggish oxygen reduction reaction (ORR) electrocatalyst. However, laccase and other copper enzymes could catalyze the ORR efficiently in nature. Inspired by this, we incorporated Cu-N-x cofactors (Cu-N-2 and Cu-N-4) into graphene encapsulated Co frameworks by direct annealing of MOFs with a post etching process. The bioinspired electrocatalyst exhibits excellent performance and stability for ORR which is comparable to or even better than Pt/C. Meanwhile, it also illustrates a fantabulous performance in a zinc-air battery device. The excellent performance can be ascribed to the abundant atomically dispersed Cu-N-x cofactors in the graphene frameworks confirmed by aberration corrected HAADF-STEM and XAFS analyses. Density functional theory calculations suggest that when Cu atoms are coordinated with the surrounding N atoms, the valence electrons of Cu atoms will transfer to nitrogen atoms, simultaneously tuning the d electronic states near the Fermi level to realize fast ORR kinetics.
资助项目	National Natural Science Foundation (NSFC)[51772283] ; National Natural Science Foundation (NSFC)[21271163] ; National Natural Science Foundation (NSFC)[U1232211] ; Fundamental Research Funds for the Central Universities[WK2060140021] ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Hefei Science Center CAS[2016HSC-IU011] ; National Key R&D Program of China[2016YFA0401801]
WOS关键词	BIFUNCTIONAL ELECTROCATALYST ; METAL ELECTROCATALYSTS ; O-2 REDUCTION ; ACTIVE-SITES ; COPPER ; CATALYSTS ; COMPLEX ; OXIDE ; NANOCRYSTALS ; IRON
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000451738900015
资助机构	National Natural Science Foundation (NSFC) ; National Natural Science Foundation (NSFC) ; National Natural Science Foundation (NSFC) ; National Natural Science Foundation (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Hefei Science Center CAS ; Hefei Science Center CAS ; Hefei Science Center CAS ; Hefei Science Center CAS ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NSFC) ; National Natural Science Foundation (NSFC) ; National Natural Science Foundation (NSFC) ; National Natural Science Foundation (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Hefei Science Center CAS ; Hefei Science Center CAS ; Hefei Science Center CAS ; Hefei Science Center CAS ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/40235]
专题	合肥物质科学研究院_中科院强磁场科学中心
通讯作者	Chen, Qianwang
作者单位	1.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 2.Univ Sci & Technol China, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, High Field Magnet Lab, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yang,Wang, Changlai,Gao, Shiqi,et al. Incorporation of Cu-N-x cofactors into graphene encapsulated Co as biomimetic electrocatalysts for efficient oxygen reduction[J]. NANOSCALE,2018,10(45):21076-21086.
APA	Yang, Yang.,Wang, Changlai.,Gao, Shiqi.,Mao, Kaitian.,Xia, Guoliang.,...&Chen, Qianwang.(2018).Incorporation of Cu-N-x cofactors into graphene encapsulated Co as biomimetic electrocatalysts for efficient oxygen reduction.NANOSCALE,10(45),21076-21086.
MLA	Yang, Yang,et al."Incorporation of Cu-N-x cofactors into graphene encapsulated Co as biomimetic electrocatalysts for efficient oxygen reduction".NANOSCALE 10.45(2018):21076-21086.