中文版 | English
Title

3D-Printed Hierarchically Micro-Nano-structured NiFe Catalysts for the Stable and Efficient Oxygen Evolution Reaction

Author
Corresponding AuthorHu, Qing; Yang, Xiao Jin
Publication Years
2023-03-24
DOI
Source Title
EISSN
2574-0970
Volume6Issue:6
Abstract
The high overpotential of the oxygen evolution reaction (OER) is the main obstacle to water electrolysis for green hydrogen production. NiFe-based materials are the potential non -precious metal electrocatalysts for the OER, but their poor stability and limited activity have been of concern. Herein, a three-dimensional self-supporting NiFe electrode is prepared by direct writing 3D printing using spherical powders of Ni and Fe metals followed by hydrothermal treatment at 130 degrees C in urea and NH4F mixed solution. The fabricated 3D micro-nano-structured NiFe electrode presents an excellent OER activity of 220 mV overpotential to reach 100 mA cm-2 with a Tafel slope of 49.1 mV dec-1 and stability up to 100 h in continuous or intermittent power supply. The hydrothermal treatment produces in situ growth of flower-like clusters of NiFe2O4 nanoneedles wrapped with FeOOH nanosheets on the surface of the 3D NiFe bimetal microsphere network, and the outstanding OER activity is attributed to a wide variety of interfaces and heterojunctions among metal microspheres, metal oxides, and hydroxides. This study provides an approach for preparing high-performance self-supporting electrodes for electrochemical processes.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Corresponding
Funding Project
Fundamental Research Funds for the Central Universities[JD2212]
WOS Research Area
Science & Technology - Other Topics ; Materials Science
WOS Subject
Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Accession No
WOS:000957956900001
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/524032
DepartmentSchool of Environmental Science and Engineering
Affiliation
1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
2.Beijing Univ Chem Technol, Natl Fundamental Res Lab New Hazardous Chem Assess, Beijing 100029, Peoples R China
3.Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China
4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
5.Beijing Huanding Environm Big Data Inst, Beijing 100083, Peoples R China
Corresponding Author AffilicationSchool of Environmental Science and Engineering
Recommended Citation
GB/T 7714
Zhou, Bo,Tang, Yang,Jiao, Zhiwei,et al. 3D-Printed Hierarchically Micro-Nano-structured NiFe Catalysts for the Stable and Efficient Oxygen Evolution Reaction[J]. ACS APPLIED NANO MATERIALS,2023,6(6).
APA
Zhou, Bo,Tang, Yang,Jiao, Zhiwei,Wan, Pingyu,Hu, Qing,&Yang, Xiao Jin.(2023).3D-Printed Hierarchically Micro-Nano-structured NiFe Catalysts for the Stable and Efficient Oxygen Evolution Reaction.ACS APPLIED NANO MATERIALS,6(6).
MLA
Zhou, Bo,et al."3D-Printed Hierarchically Micro-Nano-structured NiFe Catalysts for the Stable and Efficient Oxygen Evolution Reaction".ACS APPLIED NANO MATERIALS 6.6(2023).
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