Two-Step Electrochemical Oxidation Enables Synergistic Fe³⁺ Doping and PO₄³⁻ Modification of Nickel-Based Catalysts for Efficient Oxygen Evolution

Key Points

• The research aims to develop an effective method for modifying nickel-based catalysts to improve oxygen evolution efficiency.
• Used a two-step electrochemical oxidation strategy to fabricate catalysts.
• Optimized the ratio of Fe³⁺ and PO₄³⁻ for better performance.
• Applied the catalyst on a commercial nickel mesh.
• Achieved optimal catalytic performance with a ratio of 0.1 mmol/L Fe³⁺ and 5 mmol/L PO₄³⁻.
• Enhanced oxygen evolution performance observed compared to unmodified catalysts.