Searching General Sufficient-and-Necessary Conditions for Ultrafast Hydrogen-Evolving Electrocatalysis

doi:10.1002/adfm.201900704

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

	Searching General Sufficient-and-Necessary Conditions for Ultrafast Hydrogen-Evolving Electrocatalysis
	Guan, DQ ; Zhou, J ; Hu, ZW ; Zhou, W ; Xu, XM ; Zhong, YJ ; Liu, B ; Chen, YH ; Xu, MG ; Lin, HJ
刊名	ADVANCED FUNCTIONAL MATERIALS
	2019
卷号	29 期号:20 页码:—
关键词	OXYGEN EVOLUTION EFFICIENT PEROVSKITES STATE MOS2
ISSN号	1616-301X
DOI	10.1002/adfm.201900704
文献子类	期刊论文
英文摘要	The development of cost-effective and high-performance electrocatalysts for the hydrogen evolution reaction (HER) is one critical step toward successful transition into a sustainable green energy era. Different from previous design strategies based on single parameter, here the necessary and sufficient conditions are proposed to develop bulk non-noble metal oxides which are generally considered inactive toward HER in alkaline solutions: i) multiple active sites for different reaction intermediates and ii) a short reaction path created by ordered distribution and appropriate numbers of these active sites. Computational studies predict that a synergistic interplay between the ordered oxygen vacancies (at pyramidal high-spin Co3+ sites) and the O 2p ligand holes (OLH; at metallic octahedral intermediate-spin Co4+ sites) in RBaCo2O5.5+ ( = 1/4; R = lanthanides) can produce a near-ideal HER reaction path to adsorb H2O and release H-2, respectively. Experimentally, the as-synthesized (Gd0.5La0.5)BaCo2O5.75 outperforms the state-of-the-art Pt/C catalyst in many aspects. The proof-of-concept results reveal that the simultaneous possession of ordered oxygen vacancies and an appropriate number of OLH can realize a near-optimal synergistic catalytic effect, which is pivotal for rational design of oxygen-containing materials.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31807]
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.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China; 2.Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany; 3.Curtin Univ, WA Sch Mines Minerals Energy & Chem Engn WASM MEC, Perth, WA 6845, Australia; 4.Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Jiangsu, Peoples R China; 5.Nanjing Tech Univ, Sch Energy Sci & Engn, Nanjing 211816, Jiangsu, Peoples R China; 6.Natl Synchrotron Radiat Res Ctr, 101 Hsin Ann Rd, Hsinchu 30076, Taiwan
推荐引用方式 GB/T 7714	Guan, DQ,Zhou, J,Hu, ZW,et al. Searching General Sufficient-and-Necessary Conditions for Ultrafast Hydrogen-Evolving Electrocatalysis[J]. ADVANCED FUNCTIONAL MATERIALS,2019,29(20):—.
APA	Guan, DQ.,Zhou, J.,Hu, ZW.,Zhou, W.,Xu, XM.,...&Shao, ZP.(2019).Searching General Sufficient-and-Necessary Conditions for Ultrafast Hydrogen-Evolving Electrocatalysis.ADVANCED FUNCTIONAL MATERIALS,29(20),—.
MLA	Guan, DQ,et al."Searching General Sufficient-and-Necessary Conditions for Ultrafast Hydrogen-Evolving Electrocatalysis".ADVANCED FUNCTIONAL MATERIALS 29.20(2019):—.