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NiFe-Layered Double Hydroxide Synchronously Activated by Heterojunctions and Vacancies for the Oxygen Evolution Reaction
Luo, Yang1,2,3,4,5; Wu, Yinghong3,4,5,6; Wu, Donghai7; Huang, Chao1,2; Xiao, Dezhi1,2; Chen, Houyang8; Zheng, Shili5; Chu, Paul K.1,2
2020-09-23
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume12Issue:38Pages:42850-42858
AbstractThe development of earth-abundant transition-metal-based electrocatalysts with bifunctional properties (oxygen evolution reaction (OER) and hydrogen evolution reaction (HER)) is crucial to commercial hydrogen production. In this work, layered double hydroxide (LDH)-zinc oxide (ZnO) heterostructures and oxygen vacancies are constructed synchronously by plasma magnetron sputtering of NiFe-LDH. Using the optimal conditions, ZnO nanoparticles are uniformly distributed on the NiFe-LDH nano-flowers, which are prepared uniformly on the three-dimensional porous Ni foam. In the LDH-ZnO heterostructures and oxygen vacancies, electrons are depleted at the Ni cations on the NiFe-LDH surface and the active sites change from Fe cations to Ni cations during OER. Our theoretical assessment confirms the change of active sites after the deposition of ZnO and reveals the charge-transfer mechanism. Owing to the significant improvement in the OER dynamics, overall water splitting can be achieved at only 1.603 V in 1 M KOH when the Ni/LDH-ZnO and Ni/LDH are used as the anode and cathode, respectively. The work reveals a novel design of self-supported catalytic electrodes for efficient water splitting and also provides insights into the surface modification of catalytic materials.
Keywordwater splitting layered double hydroxide plasma magnetron sputtering heterojunctions oxygen vacancies
DOI10.1021/acsami.0c11847
Language英语
WOS KeywordBIFUNCTIONAL ELECTROCATALYSTS ; HYDROGEN-PRODUCTION ; HIGHLY EFFICIENT ; WATER ; NANOSHEETS ; OXIDE ; SHELL ; (OXY)HYDROXIDES ; NANOARRAY ; ARRAYS
Funding ProjectCity University of Hong Kong Strategic Research Grant (SRG)[7005105] ; Hong Kong Research Grants Council (RGC) General Research Fund (GRF)[CityU 11205617] ; National Natural Science Foundation of China[51774261]
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationCity University of Hong Kong Strategic Research Grant (SRG) ; Hong Kong Research Grants Council (RGC) General Research Fund (GRF) ; National Natural Science Foundation of China
WOS IDWOS:000575557800041
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42362
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Houyang; Zheng, Shili; Chu, Paul K.
Affiliation1.City Univ Hong Kong, Dept Phys, Dept Mat Sci & Engn, Kowloon, Hong Kong 999077, Peoples R China
2.City Univ Hong Kong, Dept Biomed Engn, Kowloon, Hong Kong 999077, Peoples R China
3.Univ Hong Kong, Ctr Environm Engn Res, Dept Civil Engn, Pokfulam, Hong Kong 999077, Peoples R China
4.Univ Hong Kong, Dept Mech Engn, Pokfulam, Hong Kong 999077, Peoples R China
5.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
6.City Univ Hong Kong, Sch Energy & Environm, Kowloon, Hong Kong 999077, Peoples R China
7.Huanghe Sci & Technol Coll, Inst Nanostruct Funct Mat, Henan Key Lab Nanocomposites & Applicat, Zhengzhou 450006, Peoples R China
8.Univ Buffalo State Univ New York, Dept Chem & Biol Engn, Buffalo, NY 14260 USA
Recommended Citation
GB/T 7714
Luo, Yang,Wu, Yinghong,Wu, Donghai,et al. NiFe-Layered Double Hydroxide Synchronously Activated by Heterojunctions and Vacancies for the Oxygen Evolution Reaction[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(38):42850-42858.
APA Luo, Yang.,Wu, Yinghong.,Wu, Donghai.,Huang, Chao.,Xiao, Dezhi.,...&Chu, Paul K..(2020).NiFe-Layered Double Hydroxide Synchronously Activated by Heterojunctions and Vacancies for the Oxygen Evolution Reaction.ACS APPLIED MATERIALS & INTERFACES,12(38),42850-42858.
MLA Luo, Yang,et al."NiFe-Layered Double Hydroxide Synchronously Activated by Heterojunctions and Vacancies for the Oxygen Evolution Reaction".ACS APPLIED MATERIALS & INTERFACES 12.38(2020):42850-42858.
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