Single-Atom to Single-Atom Grafting of Pt-1 onto Fe-N-4 Center: Pt-1@Fe-N-C Multifunctional Electrocatalyst with Significantly Enhanced Properties

doi:10.1002/aenm.201701345

	Single-Atom to Single-Atom Grafting of Pt-1 onto Fe-N-4 Center: Pt-1@Fe-N-C Multifunctional Electrocatalyst with Significantly Enhanced Properties
	Zheng LR(郑黎荣); Zeng, XJ; Shui, JL; Liu, XF; Liu, QT; Li, YC; Shang, JX; Zheng, LR; Yu, RH
刊名	ADVANCED ENERGY MATERIALS
	2018
卷号	8 期号:1 页码:1701345
关键词	Fe-N-C fuel cells ORR/OER/HER platinum single-atom catalysts
ISSN号	1614-6832
DOI	10.1002/aenm.201701345
文献子类	Article
英文摘要	Nonprecious metal catalysts (NPMCs) Fe-N-C are promising alternatives to noble metal Pt as the oxygen reduction reaction (ORR) catalysts for proton-exchange-membrane fuel cells. Herein, a new modulation strategy is reported to the active moiety FeN4 via a precise "single-atom to single-atom" grafting of a Pt atom onto the Fe center through a bridging oxygen molecule, creating a new active moiety of Pt-1-O-2-Fe-1-N-4. The modulated Fe-N-C exhibits remarkably improved ORR stabilities in acidic media. Moreover, it shows unexpectedly high catalytic activities toward oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), with overpotentials of 310 mV for OER in alkaline solution and 60 mV for HER in acidic media at a current density of 10 mA cm(-2), outperforming the benchmark RuO2 and comparable with Pt/C(20%), respectively. The enhanced multifunctional electrocatalytic properties are associated with the newly constructed active moiety Pt-1-O-2-Fe-1-N-4, which protects Fe sites from harmful species. Density functional theory calculations reveal the synergy in the new active moiety, which promotes the proton adsorption and reduction kinetics. In addition, the grafted Pt-1-O-2- dangling bonds may boost the OER activity. This study paves a new way to improve and extend NPMCs electrocatalytic properties through a precisely single-atom to single-atom grafting strategy.
电子版国际标准刊号	1614-6840
WOS关键词	OXYGEN REDUCTION REACTION ; MEMBRANE FUEL-CELLS ; ZEOLITIC-IMIDAZOLATE FRAMEWORKS ; HYDROGEN EVOLUTION REACTION ; WATER-GAS SHIFT ; FE-N-X ; GRAPHENE OXIDE ; ACTIVE-SITES ; EFFICIENT ELECTROCATALYST ; CATALYTIC SITES
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000419327200006
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285514]
专题	高能物理研究所_多学科研究中心
通讯作者	Zheng LR(郑黎荣)
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zheng LR,Zeng, XJ,Shui, JL,et al. Single-Atom to Single-Atom Grafting of Pt-1 onto Fe-N-4 Center: Pt-1@Fe-N-C Multifunctional Electrocatalyst with Significantly Enhanced Properties[J]. ADVANCED ENERGY MATERIALS,2018,8(1):1701345.
APA	郑黎荣.,Zeng, XJ.,Shui, JL.,Liu, XF.,Liu, QT.,...&Yu, RH.(2018).Single-Atom to Single-Atom Grafting of Pt-1 onto Fe-N-4 Center: Pt-1@Fe-N-C Multifunctional Electrocatalyst with Significantly Enhanced Properties.ADVANCED ENERGY MATERIALS,8(1),1701345.
MLA	郑黎荣,et al."Single-Atom to Single-Atom Grafting of Pt-1 onto Fe-N-4 Center: Pt-1@Fe-N-C Multifunctional Electrocatalyst with Significantly Enhanced Properties".ADVANCED ENERGY MATERIALS 8.1(2018):1701345.