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Advanced cathode modification strategies for high-temperature CO2 electrolysis in solid oxide electrolysis cells
Xu Han1, Iman Ghasemi1, Sebete S Mabaleha1
1School of Chemical Engineering, Adelaide University, Adelaide, 5000, South Australia, Australia. xiaoyong.xu@adelaide.edu.au.
Chemical Communications (Cambridge, England)
|August 5, 2026
Summary
Modifying perovskite cathodes enhances carbon dioxide electrolysis in solid oxide electrolysis cells (SOECs). Strategies like bulk, surface, and interface engineering boost catalytic activity for efficient carbon utilization and energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Chemical Engineering
Background:
- Solid oxide electrolysis cells (SOECs) offer promising routes for carbon dioxide (CO2) conversion.
- Perovskite oxides are attractive cathode materials due to their stability and versatility.
- Limited catalytic activity of perovskites hinders efficient CO2 electrolysis.
Purpose of the Study:
- To systematically review modification strategies for perovskite-based cathodes in SOECs.
- To provide a comprehensive perspective on enhancing CO2 electrolysis performance.
- To identify future research directions for advanced perovskite cathodes.
Main Methods:
- Classification of modification strategies into bulk structure, surface modification, and interface catalytic engineering.
- Critical discussion of how these strategies tune electronic structure and defect chemistry.
- Analysis of impacts on catalytic activity and interfacial processes.
Main Results:
- Modification strategies significantly improve perovskite cathode performance for CO2 electrolysis.
- Tuning electronic and defect properties is key to enhanced catalytic activity.
- Optimized interfaces are crucial for efficient electrochemical conversion.
Conclusions:
- Perovskite cathode modification is essential for advancing SOEC technology.
- Future research should focus on rational design for enhanced activity, durability, and scalability.
- These advancements are vital for practical carbon utilization and sustainable energy storage.
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