Structural and electronic optimization of graphene encapsulating binary metal for highly efficient water oxidation

doi:10.1016/j.nanoen.2018.07.062

	Structural and electronic optimization of graphene encapsulating binary metal for highly efficient water oxidation
	Ren, Pengju 3,4; Bao, Xinhe 5; Tu, Yunchuan 1,2,5; Deng, Dehui 1,5
刊名	NANO ENERGY
	2018-10-01
卷号	52 页码:494-500
关键词	Water electrolysis Graphene Non-precious metal Oxygen evolution reaction
ISSN号	2211-2855
DOI	10.1016/j.nanoen.2018.07.062
通讯作者	Deng, Dehui(dhdeng@dicp.ac.cn) ; Bao, Xinhe(xhbao@dicp.ac.cn)
英文摘要	Encapsulating non-precious metals within graphene layers represents a promising strategy to substitute precious metal catalyst towards the oxygen evolution reaction (OER). The surface electronic structure of graphene can significantly affect the OER performance, which depends on the types of encapsulated metal and their proportion but it still lacks efficient methods to modulate them. Herein, we report a universal strategy to encapsulate FeNi binary metal nanoalloy within ultrathin graphene layers, which can efficiently optimize the electronic properties and the OER activity on the graphene surface via modulating Fe/Ni ratio. The optimized catalyst with Fe/Ni of 1 shows a low overpotential of 280 mV at the current density of 10 mA cm(-2). Both the catalytic activity and durability of the catalyst are better than the commercial IrO2. Theoretical calculations indicate that the adsorption strength of each intermediate on graphene can be optimally balanced by modulating the metal proportion of the encapsulated FeNi, leading to an enhanced OER activity with reduced overpotential on the graphene surface.
资助项目	Ministry of Science and Technology of China[2016YFA0204100] ; Ministry of Science and Technology of China[2016YFA0200200] ; National Natural Science Foundation of China[21573220] ; National Natural Science Foundation of China[21621063] ; National Natural Science Foundation of China[21703274] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDB-SSW-JSC020] ; strategic Priority Research Program of the Chinese Academy of Sciences[XDA09030100] ; China Postdoctoral Science Foundation[2016M590216]
WOS关键词	HYDROGEN EVOLUTION REACTION ; INITIO MOLECULAR-DYNAMICS ; AUGMENTED-WAVE METHOD ; OXYGEN REDUCTION ; CARBON NANOTUBES ; ELECTROCATALYSTS ; CATALYSIS ; SITES ; NANOPARTICLES ; TRANSITION
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000444859700051
资助机构	Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; strategic Priority Research Program of the Chinese Academy of Sciences ; strategic Priority Research Program of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; strategic Priority Research Program of the Chinese Academy of Sciences ; strategic Priority Research Program of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; strategic Priority Research Program of the Chinese Academy of Sciences ; strategic Priority Research Program of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; strategic Priority Research Program of the Chinese Academy of Sciences ; strategic Priority Research Program of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/167056]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Bao, Xinhe; Deng, Dehui
作者单位	1.Xiamen Univ, Coll Chem & Chem Engn, Collaborat Innovat Ctr Chem Energy Mat iChEM, Xiamen 361005, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China 4.Synfuels China Co Ltd, Natl Energy Ctr Coal Liquids, Beijing 101407, Peoples R China 5.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, iChEM, Zhongshan Rd 457, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Ren, Pengju,Bao, Xinhe,Tu, Yunchuan,et al. Structural and electronic optimization of graphene encapsulating binary metal for highly efficient water oxidation[J]. NANO ENERGY,2018,52:494-500.
APA	Ren, Pengju,Bao, Xinhe,Tu, Yunchuan,&Deng, Dehui.(2018).Structural and electronic optimization of graphene encapsulating binary metal for highly efficient water oxidation.NANO ENERGY,52,494-500.
MLA	Ren, Pengju,et al."Structural and electronic optimization of graphene encapsulating binary metal for highly efficient water oxidation".NANO ENERGY 52(2018):494-500.