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Hydrogen evolution activity tuning via twodimensional electron accumulation at buried interfaces
Xue, Yudong1,2,3,4; Fishman, Zachary S.1,3; Wang, Yunting5; Pan, Zhenhua1,3; Shen, Xin1,3; Yanagi, Rito1,3; Hutchings, Gregory S.1; Liu, Mingzhao6; Zheng, Shili2; Zhang, Yi2; Altman, Eric I.1; Hu, Shu1,3
2019-09-28
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume7Issue:36Pages:20696-20705
AbstractDeveloping efficient earth-abundant transition metal-based electrocatalysts for the hydrogen evolution reaction (HER) is crucial for hydrogen production at scale. This paper reports that the buried electrocatalytic interfaces between Ni-Fe sulfide (NiFeS) nanosheets and TiO2 conformal coatings (about 5 nm) achieved remarkable HER activity improvement, lowering the HER overpotential from 170 mV to 107 mV at 50 mA cm 2 in a base. Non-HER active, permeable TiO2 coatings grown by atomic layer deposition (ALD) achieved continuous fine-tuning of the electronic properties at the buried TiO2/ NiFeS interfaces, as a novel strategy and the main factor for electron accumulation at the interface. Core-level and valence band X-ray photoelectron spectroscopy (XPS) was used to investigate the TiO2 electronicstructure tuning effect on the charge-transfer energetics during the HER. Their alkaline HER mechanism was elucidated by supplementing characterizations of membrane permeation, Tafel slope, and synchrotron X-ray absorption spectroscopy, which verified that the buried TiO2/ NiFeS interfaces are electrocatalytically active. This study offers a general strategy for improving the charge-transfer kinetics of an electrocatalytic system by confining catalysis at a permeable solid-solid interface. The broad applicability of permeable and tunable coatings potentially accelerates the optimization of earthabundant catalysts to achieve high performance under operationally relevant conditions.
DOI10.1039/c9ta07123g
Language英语
WOS KeywordATOMIC LAYER DEPOSITION ; EFFICIENT ELECTROCATALYST ; IRON SULFIDE ; K-EDGE ; METAL ; PHOSPHIDE ; NI ; NANOSHEETS ; CATALYSTS ; NANOPARTICLES
Funding ProjectUniversity of Chinese Academy of Sciences[UCAS[2015]37] ; National Natural Science Foundation of China[51774261] ; Petroleum Research Fund[ND55524] ; DOE Office of Science[DE-SC00122704]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationUniversity of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Petroleum Research Fund ; DOE Office of Science
WOS IDWOS:000488618600023
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/31130
Collection中国科学院过程工程研究所
Corresponding AuthorXue, Yudong; Hu, Shu
Affiliation1.Yale Univ, Dept Chem & Environm Engn, New Haven, CT 06511 USA
2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Yale Univ, Energy Sci Inst, West Haven, CT 06516 USA
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
6.Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA
Recommended Citation
GB/T 7714
Xue, Yudong,Fishman, Zachary S.,Wang, Yunting,et al. Hydrogen evolution activity tuning via twodimensional electron accumulation at buried interfaces[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(36):20696-20705.
APA Xue, Yudong.,Fishman, Zachary S..,Wang, Yunting.,Pan, Zhenhua.,Shen, Xin.,...&Hu, Shu.(2019).Hydrogen evolution activity tuning via twodimensional electron accumulation at buried interfaces.JOURNAL OF MATERIALS CHEMISTRY A,7(36),20696-20705.
MLA Xue, Yudong,et al."Hydrogen evolution activity tuning via twodimensional electron accumulation at buried interfaces".JOURNAL OF MATERIALS CHEMISTRY A 7.36(2019):20696-20705.
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