Tracking Structural Self-Reconstruction and Identifying True Active Sites toward Cobalt Oxychloride Precatalyst of Oxygen Evolution Reaction

doi:10.1002/adma.201805127

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Tracking Structural Self-Reconstruction and Identifying True Active Sites toward Cobalt Oxychloride Precatalyst of Oxygen Evolution Reaction
	Jiang, HL ; He, Q ; Li, XY ; Su, XZ ; Zhang, YK ; Chen, SM ; Zhang, S ; Zhang, GZ ; Jiang, J ; Luo, Y
刊名	ADVANCED MATERIALS
	2019
卷号	31 期号:8 页码:—
关键词	LAYERED DOUBLE HYDROXIDE WATER OXIDATION CATALYSTS ELECTROCATALYSTS NANOSHEETS PHOSPHIDES ARRAYS OXIDES
ISSN号	0935-9648
DOI	10.1002/adma.201805127
文献子类	期刊论文
英文摘要	Unravelling the intrinsic mechanism of electrocatalytic oxygen evolution reaction (OER) by use of heterogeneous catalysts is highly desirable to develop related energy conversion technologies. Albeit dynamic self-reconstruction of the catalysts during OER is extensively observed, it is still highly challenging to operando probe the reconstruction and precisely identify the true catalytically active components. Here, a new class of OER precatalyst, cobalt oxychloride (Co-2(OH)(3)Cl) with unique features that allow a gradual phase reconstruction during OER due to the etching of lattice anion is demonstrated. The reconstruction continuously boosts OER activities. The reconstruction-derived component delivers remarkable performance in both alkaline and neutral electrolytes. Operando synchrotron radiation-based X-ray spectroscopic characterization together with density functional theory calculations discloses that the etching of lattice Cl- serves as the key to trigger the reconstruction and the boosted catalytic performance roots in the atomic-level coordinatively unsaturated sites (CUS). This work establishes fundamental understanding on the OER mechanism associated with self-reconstruction of heterogeneous catalysts.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31882]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Univ Sci & Technol China, CAS Ctr Excellence Nanosci, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China; 2.Univ Sci & Technol China, Sch Chem & Mat Sci, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China; 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Jialuo Rd 2019, Shanghai 201800, Peoples R China; 4.Rice Univ, Dept Mat Sci & Nano Engn, Houston, TX 77005 USA
推荐引用方式 GB/T 7714	Jiang, HL,He, Q,Li, XY,et al. Tracking Structural Self-Reconstruction and Identifying True Active Sites toward Cobalt Oxychloride Precatalyst of Oxygen Evolution Reaction[J]. ADVANCED MATERIALS,2019,31(8):—.
APA	Jiang, HL.,He, Q.,Li, XY.,Su, XZ.,Zhang, YK.,...&Song, L.(2019).Tracking Structural Self-Reconstruction and Identifying True Active Sites toward Cobalt Oxychloride Precatalyst of Oxygen Evolution Reaction.ADVANCED MATERIALS,31(8),—.
MLA	Jiang, HL,et al."Tracking Structural Self-Reconstruction and Identifying True Active Sites toward Cobalt Oxychloride Precatalyst of Oxygen Evolution Reaction".ADVANCED MATERIALS 31.8(2019):—.