A Facile Strategy to Construct Amorphous Spinel-Based Electrocatalysts with Massive Oxygen Vacancies Using Ionic Liquid Dopant

doi:10.1002/aenm.201800980

CORC > 化学研究所 > 中国科学院化学研究所

	A Facile Strategy to Construct Amorphous Spinel-Based Electrocatalysts with Massive Oxygen Vacancies Using Ionic Liquid Dopant
	Sun, Jing 1; Guo, Niankun 1; Shao, Zhiyu 1; Huang, Keke 2; Li, Yaowen 3; He, Feng 4,5; Wang, Qin 1
刊名	ADVANCED ENERGY MATERIALS
	2018-09-25
卷号	8 期号:27
关键词	Electrocatalysis Ionic Liquid Oxygen Evolution Reaction Oxygen Vacancy Spinel
ISSN号	1614-6832
DOI	10.1002/aenm.201800980
英文摘要	Oxygen vacancies are demonstrated to be beneficial to various electrocatalytic reactions. However, integrating oxygen vacancies into an amorphous catalyst with a large specific surface area, and investigating its effect on the oxygen evolution reaction remains a great challenge. Herein, oxygen vacancies are introduced into an amorphous N, P, and F tri-doped CoFe2O4 using ionic liquid as a dopant. Simultaneously, ultrafine MoS2 nanoclusters are anchored onto its surface to increase the specific surface area. The vacancy-rich MoS2/NPF-CoFe2O4 exhibits an overpotential of 250 mV and a small Tafel slope of 41 mV dec(-1), which is the best spinel-based oxygen evolution reaction (OER) electrocatalysts so far. The excellent performance is attributed to massive oxygen vacancies, amorphous structure, large surface area, and synergistic coupling effects among active species. Density-functional theory calculations reveal that the electronic structure of the catalyst can be modulated in the presence of heteroatoms and MoS2 nanoclusters, and then the energy barriers of intermediates are decreased as well, which enhances the OER performance. This design not only provides a simple strategy to construct amorphous structures with abundant oxygen vacancies using ionic liquid-dopants, but also presents an in-depth insight into the OER mechanism in alkaline solution.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000445444600005
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/43021]
专题	中国科学院化学研究所
通讯作者	He, Feng; Wang, Qin
作者单位	1.Inner Mongolia Univ, Coll Chem & Chem Engn, Hohhot 010021, Peoples R China 2.Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130022, Jilin, Peoples R China 3.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China 4.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Sun, Jing,Guo, Niankun,Shao, Zhiyu,et al. A Facile Strategy to Construct Amorphous Spinel-Based Electrocatalysts with Massive Oxygen Vacancies Using Ionic Liquid Dopant[J]. ADVANCED ENERGY MATERIALS,2018,8(27).
APA	Sun, Jing.,Guo, Niankun.,Shao, Zhiyu.,Huang, Keke.,Li, Yaowen.,...&Wang, Qin.(2018).A Facile Strategy to Construct Amorphous Spinel-Based Electrocatalysts with Massive Oxygen Vacancies Using Ionic Liquid Dopant.ADVANCED ENERGY MATERIALS,8(27).
MLA	Sun, Jing,et al."A Facile Strategy to Construct Amorphous Spinel-Based Electrocatalysts with Massive Oxygen Vacancies Using Ionic Liquid Dopant".ADVANCED ENERGY MATERIALS 8.27(2018).