Ruthenium-Doped Cobalt-Chromium Layered Double Hydroxides for Enhancing Oxygen Evolution through Regulating Charge Transfer

doi:10.1002/smll.201905328

SIC OpenIR

	Ruthenium-Doped Cobalt-Chromium Layered Double Hydroxides for Enhancing Oxygen Evolution through Regulating Charge Transfer
	Dong, CL; Zhang, XL; Xu, J; Si, R; Sheng, J; Luo, J; Zhang, SN; Dong, WJ; Li, GB; Wang, WC; Huang, FQ
	2020-02-01
Source Publication	SMALL
ISSN	1613-6810
Issue	5
Subtype	Article
Abstract	Exploring the origin of transition metal (TM) lattice-doped layered double hydroxides (LDHs) toward the oxygen evolution reaction (OER) plays a crucial role in engineering efficient electrocatalysts. Without understanding the physics behind the TM-induced catalytic enhancements, it would be challenging to design the next generation of electrocatalysts. Herein, single Ru atoms are introduced into a CoCr LDHs lattice to improve activity. In 0.1 m KOH, CoCrRu LDHs require only 290 mV overpotential to drive to 10 mA cm(-2) and show a Tafel slope of 56.12 mV dec(-1). Electronic structure analyses based on density functional theory confirm that promoted OER activity originates from synergetic charge transfer among Ru, Cr, and Co elements. Specifically, Ru dopants can downshift d states of Co and enhance electron donation of Cr to oxygenates, which essentially breaks the scaling relation and achieves higher activity. This work provides insights into how single atomic Ru dopant tunes the electronic structures of its neighbor's active site Co and thus increases OER activities.
DOI	10.1002/smll.201905328
WOS Keyword	ELECTROCATALYST ; PEROVSKITE ; NANOSHEETS ; CATALYSTS ; EXAFS ; WATER
Language	英语
WOS Research Area	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Publisher	WILEY-V C H VERLAG GMBH
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/28380
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Dong, CL,Zhang, XL,Xu, J,et al. Ruthenium-Doped Cobalt-Chromium Layered Double Hydroxides for Enhancing Oxygen Evolution through Regulating Charge Transfer[J]. SMALL,2020(5).
APA	Dong, CL.,Zhang, XL.,Xu, J.,Si, R.,Sheng, J.,...&Huang, FQ.(2020).Ruthenium-Doped Cobalt-Chromium Layered Double Hydroxides for Enhancing Oxygen Evolution through Regulating Charge Transfer.SMALL(5).
MLA	Dong, CL,et al."Ruthenium-Doped Cobalt-Chromium Layered Double Hydroxides for Enhancing Oxygen Evolution through Regulating Charge Transfer".SMALL .5(2020).

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院上海硅酸盐研究所机构知识库