Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
location: home > paper >
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Ni-Bi Nanosheet Arrays Loaded with FeOOH for Efficient Oxygen Evolution
DOI:
10.16355/j.tyut.1007-9432.20230120
Received:
Accepted:
| Corresponding author | Institute | |
| LI Hui | College of Chemical Engineering and Technology, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology |
abstract:
【Purposes】It is of great significance for the storage and utilization of solar energy to develop high-efficiency non-precious metal oxygen evolution reaction (OER) catalysts that can be used in water splitting under near-neutral conditions.【Methods】FeOOH@Ni-Bi/NF electrocatalyst was constructed in two steps by electro-oxidation treatment and electro-deposition of Ni(OH)2/NF that obtained by hydrothermal method.【Findings】The large number of active sites provided by nickel foam (NF) substrate and three-dimensional nanosheet array structure of the catalyst facilitate the mass transfer process of OER. In addition, the electrochemical activity of catalyst is greatly enhanced by modulating the electro-oxidation degree of Ni-Bi and the amount of deposited FeOOH. Catalytic performance of the optimized FeOOH@Ni-Bi/NF is tested in near-neutral medium (0.1 mmol/L K2B4O7) with an overpotential of 394 mV and a Tafel slope of 54.2 mV/dec at 20 mA/cm2, showing excellent catalytic activity and long-term stability for OER.
Keywords:
oxygen evolution reaction; NiFe-based; nanosheet array; synergistic effect;