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Constructing CrNiCoO4/MoO3 nanosheets via a multi-step strategy for efficient water splitting
Rong Zhu1, Yefan Liu1, Qianqiao Chen1
1Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of China. cqq@njust.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|December 19, 2025
Summary
Developing advanced electrocatalysts is key for a sustainable hydrogen economy. A novel CrNiCoO4/MoO3 nanostructure shows excellent oxygen evolution reaction activity, paving the way for efficient hydrogen production.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- High-performance, non-precious electrocatalysts are crucial for a scalable hydrogen economy.
- Replacing expensive noble metal catalysts is an ongoing research challenge.
Purpose of the Study:
- To design a superior electrocatalyst using a defect-rich CrNiCoO4/MoO3 nanostructure.
- To investigate the synergistic effects of multiple strategies for enhanced electrocatalytic activity.
Main Methods:
- Fabrication of a CrNiCoO4/MoO3 nanostructure.
- Integration of transition metal doping, defect engineering, morphology control, and heterostructure construction.
- Electrochemical evaluation of oxygen evolution reaction (OER) activity.
Main Results:
- The optimal catalyst achieved an OER overpotential of 260 mV at 50 mA cm-2.
- A low Tafel slope of 45.31 mV dec-1 was recorded, indicating efficient kinetics.
- Synergistic effects between Cr doping and MoO3 compositing enhanced electronic structure and active sites.
Conclusions:
- The designed CrNiCoO4/MoO3 nanostructure serves as a highly effective electrocatalyst for OER.
- The combination of multiple strategies offers a promising pathway for developing advanced electrocatalysts.
- This research contributes to the advancement of non-precious metal catalysts for the hydrogen economy.
