Approaching the activity limit of CoSe2 for oxygen evolution via Fe doping and Co vacancy

doi:10.1038/s41467-020-15498-0

HFCAS OpenIR

	Approaching the activity limit of CoSe2 for oxygen evolution via Fe doping and Co vacancy
	Dou, Yuhai 1; He, Chun-Ting 2; Zhang, Lei1 ; Yin, Huajie 1; Al-Mamun, Mohammad 1; Ma, Jianmin 3; Zhao, Huijun 1,4
	2020-04-03
发表期刊	NATURE COMMUNICATIONS
ISSN	2041-1723
通讯作者	Zhao, Huijun(h.zhao@giffith.edu.au)
摘要	Electronic structure engineering lies at the heart of efficient catalyst design. Most previous studies, however, utilize only one technique to modulate the electronic structure, and therefore optimal electronic states are hard to be achieved. In this work, we incorporate both Fe dopants and Co vacancies into atomically thin CoSe2 nanobelts for /coxygen evolution catalysis, and the resulted CoSe2-D-Fe-V-Co exhibits much higher catalytic activity than other defect-activated CoSe2 and previously reported FeCo compounds. Deep characterizations and theoretical calculations identify the most active center of Co-2 site that is adjacent to the VCo-nearest surface Fe site. Fe doping and Co vacancy synergistically tune the electronic states of Co-2 to a near-optimal value, resulting in greatly decreased binding energy of OH* (Delta E-OH) without changing Delta E-O, and consequently lowering the catalytic overpotential. The proper combination of multiple defect structures is promising to unlock the catalytic power of different catalysts for various electrochemical reactions.
DOI	10.1038/s41467-020-15498-0
关键词[WOS]	RATIONAL DESIGN ; WATER ; NANOSHEETS ; OXIDATION ; ELECTROCATALYSIS ; SITES ; (OXY)HYDROXIDE ; IDENTIFICATION ; NANOBELTS ; TIO2
收录类别	SCI
语种	英语
资助项目	Australian Research Council (ARC)[DP200100965] ; Griffith University[YUDOU 036]
项目资助者	Australian Research Council (ARC) ; Griffith University
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000564272800004
出版者	NATURE PUBLISHING GROUP
引用统计	被引频次：177[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/102892
专题	中国科学院合肥物质科学研究院
通讯作者	Zhao, Huijun
作者单位	1.Griffith Univ, Ctr Clean Environm & Energy, Gold Coast, Qld 4222, Australia 2.Jiangxi Normal Univ, Coll Chem & Chem Engn, Key Lab Funct Small Organ Mol, Minist Educ, Nanchang 330022, Jiangxi, Peoples R China 3.Hunan Univ, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China 4.Chinese Acad Sci, Ctr Environm & Energy Nanomat, CAS Ctr Excellence Nanosci, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Dou, Yuhai,He, Chun-Ting,Zhang, Lei,et al. Approaching the activity limit of CoSe2 for oxygen evolution via Fe doping and Co vacancy[J]. NATURE COMMUNICATIONS,2020,11.
APA	Dou, Yuhai.,He, Chun-Ting.,Zhang, Lei.,Yin, Huajie.,Al-Mamun, Mohammad.,...&Zhao, Huijun.(2020).Approaching the activity limit of CoSe2 for oxygen evolution via Fe doping and Co vacancy.NATURE COMMUNICATIONS,11.
MLA	Dou, Yuhai,et al."Approaching the activity limit of CoSe2 for oxygen evolution via Fe doping and Co vacancy".NATURE COMMUNICATIONS 11(2020).