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Updated: Feb 10, 2026
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Synthesis of Hierarchical ZnO/CdSSe Heterostructure Nanotrees
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Self-Standing NiFe MOF@Ni3S2 Core-Shell Hierarchical Heterostructure for Enhanced Oxygen Evolution Activity
Hua Li1, Fang Su1, Shuiqiang Chen1
1School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan 414006, P. R. China.
ACS Omega
|February 9, 2026
Summary
This study developed a novel NiFe MOF@Ni3S2 core-shell structure for enhanced oxygen evolution reaction (OER) catalysis. The hybrid material demonstrates excellent electrocatalytic activity and durability, paving the way for efficient renewable energy systems.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Metal-organic frameworks (MOFs) show promise for energy applications but suffer from low electronic conductivity.
- Efficient electrocatalysts are crucial for renewable energy technologies like water splitting.
Purpose of the Study:
- To synthesize a self-standing NiFe MOF@Ni3S2 core-shell hierarchical heterostructure.
- To enhance the electrocatalytic activity of MOFs for the oxygen evolution reaction (OER).
Main Methods:
- Synthesis of NiFe MOF@Ni3S2 core-shell heterostructure on nickel foam using a semisacrificial template.
- Characterization of the heterostructure's morphology, composition, and electrochemical properties.
Main Results:
- The Ni3S2 nanosheet core facilitated rapid charge transfer.
- The bimetallic NiFe MOF nanosheets provided abundant active sites.
- The NiFe MOF@Ni3S2/NF exhibited superior OER activity with low overpotentials (177 mV at 10 mA cm-2) and a small Tafel slope (24.1 mV dec-1).
Conclusions:
- The developed NiFe MOF@Ni3S2/NF is a highly efficient and durable earth-abundant OER catalyst.
- This work provides insights for designing MOF-based nanocomposites for electrochemical renewable energy systems.
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