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Recent Advances in Oxygen Electrocatalysts Based on Perovskite Oxides
Jun Xu1, Chan Chen1, Zhifei Han2
1Department of Chemistry, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
Nanomaterials (Basel, Switzerland)
|August 17, 2019
Summary
Perovskite oxides are promising, low-cost bifunctional electrocatalysts for oxygen reduction and evolution reactions. This review highlights advanced perovskite materials and composites for improved energy conversion devices.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Conversion
Background:
- Oxygen reduction and evolution reactions are critical for energy devices like metal-air batteries and electrolyzers.
- Precious metal catalysts are effective but costly, driving the search for alternatives.
- Perovskite oxides offer a low-cost, versatile, and active alternative for oxygen electrocatalysis.
Purpose of the Study:
- To review the fundamentals of perovskite oxygen electrocatalysts.
- To discuss emerging high-performance perovskite-based electrocatalysts.
- To outline challenges and future directions for perovskite electrocatalyst development.
Main Methods:
- Literature review of perovskite oxygen electrocatalysts.
- Analysis of perovskite composition control, high surface area fabrication, and composite strategies.
- Discussion of performance metrics and stability.
Main Results:
- Perovskite oxides demonstrate significant potential as bifunctional electrocatalysts.
- Tailoring perovskite composition, increasing surface area, and forming composites enhance catalytic activity.
- Advanced perovskite materials show comparable or superior performance to precious metals.
Conclusions:
- Perovskite oxides are a viable and cost-effective alternative to precious metals for oxygen electrocatalysis.
- Further research into controlled synthesis and composite design will unlock their full potential.
- Perovskite electrocatalysts are crucial for advancing energy conversion technologies.
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