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Published on: December 6, 2021
MOF-derived high-entropy antiperovskite carbonitrides for efficient oxygen evolution
Jianwen Su1, Xulu Zhao1, Run Yu2
1State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, No. 18 Fuxue Road, Changping District, Beijing 102249, China.
Chemical Communications (Cambridge, England)
|June 16, 2026
Summary
A novel senary high-entropy antiperovskite carbonitride catalyst shows outstanding oxygen evolution reaction performance. It reconstructs in situ to form an active layer, enabling an efficient lattice oxygen-mediated pathway.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Developing efficient electrocatalysts is crucial for energy conversion technologies.
- The oxygen evolution reaction (OER) is a key bottleneck in many electrochemical processes, such as water splitting.
- High-entropy materials offer unique properties for catalytic applications.
Purpose of the Study:
- To synthesize and characterize a novel MOF-derived senary high-entropy antiperovskite carbonitride.
- To evaluate its electrocatalytic performance for the oxygen evolution reaction.
- To elucidate the in situ surface reconstruction mechanism and the active species involved.
Main Methods:
- Metal-Organic Framework (MOF) derivation and synthesis.
- Antiperovskite carbonitride material characterization (e.g., XRD, SEM, TEM, XPS).
- Electrochemical testing for oxygen evolution reaction (OER) performance (e.g., CV, LSV, EIS).
- In situ characterization techniques to study surface reconstruction.
Main Results:
- The synthesized senary high-entropy antiperovskite carbonitride exhibited exceptional OER performance, requiring only 264 mV overpotential at 10 mA cm-2.
- In situ surface reconstruction under anodic polarization was observed, forming a conductive precatalyst.
- An active amorphous M-OOH shell was identified as the key component triggering the lattice oxygen-mediated (LOM) pathway.
Conclusions:
- MOF-derived senary high-entropy antiperovskite carbonitrides are promising electrocatalysts for the oxygen evolution reaction.
- In situ surface reconstruction is a critical factor in achieving high catalytic activity.
- The identified LOM pathway offers a new strategy for designing efficient OER electrocatalysts.
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