Divergent A-Site Regulation Mechanisms in Rare-Earth and Alkaline-Earth Nickelates for Unlocking Bifunctional Oxygen Electrocatalysis

Key Points

• The central aim is to explore design strategies for efficient bifunctional electrocatalysts in renewable energy applications.
• Investigated perovskite nickelates' structural and electronic properties.
• Analyzed oxygen reduction and evolution reaction performance.
• Utilized electrochemical measurements to evaluate catalyst efficiency.
• Identified varying A-site regulation mechanisms in rare-earth and alkaline-earth nickelates.
• Demonstrated improved electrocatalytic activity for oxygen reactions across nickelate compositions.
• Highlighted specific structural features correlating with enhanced catalytic performance.