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Hydrogen evolution activity tuning via twodimensional electron accumulation at buried interfaces

文献类型：期刊论文

作者Xue, Yudong1,4,5,6; Fishman, Zachary S.1,5; Wang, Yunting3; Pan, Zhenhua1,5; Shen, Xin1,5; Yanagi, Rito1,5; Hutchings, Gregory S.5; Liu, Mingzhao2; Zheng, Shili6; Zhang, Yi6
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2019-09-28
卷号7期号:36页码:20696-20705
ISSN号2050-7488
DOI10.1039/c9ta07123g
英文摘要Developing 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.
WOS关键词ATOMIC LAYER DEPOSITION ; EFFICIENT ELECTROCATALYST ; IRON SULFIDE ; K-EDGE ; METAL ; PHOSPHIDE ; NI ; NANOSHEETS ; CATALYSTS ; NANOPARTICLES
资助项目University 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研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000488618600023
出版者ROYAL SOC CHEMISTRY
资助机构University of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Petroleum Research Fund ; DOE Office of Science
源URL[http://ir.ipe.ac.cn/handle/122111/31129]  
专题中国科学院过程工程研究所
通讯作者Xue, Yudong; Hu, Shu
作者单位1.Yale Univ, Energy Sci Inst, West Haven, CT 06516 USA
2.Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA
3.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Yale Univ, Dept Chem & Environm Engn, New Haven, CT 06511 USA
6.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：过程工程研究所

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