Defect-Engineered Ultrathin delta-MnO2 Nanosheet Arrays as Bifunctional   Electrodes for Efficient Overall Water Splitting

doi:10.1002/aenm.201700005

CORC > 北京大学 > 工学院

	Defect-Engineered Ultrathin delta-MnO2 Nanosheet Arrays as Bifunctional Electrodes for Efficient Overall Water Splitting
	Zhao, Yunxuan ; Chang, Chao ; Teng, Fei ; Zhao, Yufei ; Chen, Guangbo ; Shi, Run ; Waterhouse, Geoffrey I. N. ; Huang, Weifeng ; Zhang, Tierui
刊名	ADVANCED ENERGY MATERIALS
	2017
关键词	delta-MnO2 bifunctional electrocatalysts defects overall water splitting ultrathin nanosheet arrays HYDROGEN EVOLUTION REACTION OXYGEN EVOLUTION OXIDATION CATALYSTS NANOPARTICLES GRAPHENE ELECTROCATALYST HYDROXIDE TRENDS MNO2
DOI	10.1002/aenm.201700005
英文摘要	Recently, defect engineering has been used to intruduce half-metallicity into selected semiconductors, thereby significantly enhancing their electrical conductivity and catalytic/electrocatalytic performance. Taking inspiration from this, we developed a novel bifunctional electrode consisting of two monolayer thick manganese dioxide (delta-MnO2) nanosheet arrays on a nickel foam, using a novel in-situ method. The bifunctional electrode exposes numerous active sites for electrocatalytic rections and displays excellent electrical conductivity, resulting in strong performance for both HER and OER. Based on detailed structure analysis and density functional theory (DFT) calculations, the remarkably OER and HER activity of the bifunctional electrode can be attributed to the ultrathin d-MnO2 nanosheets containing abundant oxygen vacancies lead to the formation od Mn3+ active sites, which give rise to halfmetallicity properties and strong H2O adsorption. This synthetic strategy introduced here represents a new method for the development of non-precious metal Mn-based electrocatalysts for eddicient energy conversion.; National Science Foundation of China [21377060, 51572270, U1662118, 51322213, 21401206, 21301183, 21401207]; Science and Technology Infrastructure Program of Jiangsu [BM201380277]; Six Talent Climax Foundation of Jiangsu [20100292]; "333" Outstanding Youth Scientist Foundation of Jiangsu [C2011015]; Key Project of Environmental Protection Program of Jiangsu [2013016]; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD); SRF for ROCS, SEM [2013S002]; Ministry of Science and Technology of China [2014CB239402, 2013CB834505]; National Key Projects for Fundamental Research and Development of China [2016YFB0600900]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB17030300]; Youth Innovation Promotion Association; SCI(E); ARTICLE; 18; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/470785]
专题	工学院
推荐引用方式 GB/T 7714	Zhao, Yunxuan,Chang, Chao,Teng, Fei,et al. Defect-Engineered Ultrathin delta-MnO2 Nanosheet Arrays as Bifunctional Electrodes for Efficient Overall Water Splitting[J]. ADVANCED ENERGY MATERIALS,2017.
APA	Zhao, Yunxuan.,Chang, Chao.,Teng, Fei.,Zhao, Yufei.,Chen, Guangbo.,...&Zhang, Tierui.(2017).Defect-Engineered Ultrathin delta-MnO2 Nanosheet Arrays as Bifunctional Electrodes for Efficient Overall Water Splitting.ADVANCED ENERGY MATERIALS.
MLA	Zhao, Yunxuan,et al."Defect-Engineered Ultrathin delta-MnO2 Nanosheet Arrays as Bifunctional Electrodes for Efficient Overall Water Splitting".ADVANCED ENERGY MATERIALS (2017).