Dual Doping in Precious Metal Oxides: Accelerating Acidic Oxygen Evolution Reaction

Area of Science:

• Electrocatalysis
• Materials Science
• Energy Conversion

Background:

• Acidic oxygen evolution reactions (OERs) are critical for proton exchange membrane water electrolysis.
• Developing highly active and stable catalysts for acidic OERs remains a significant challenge in electrocatalysis.

Purpose of the Study:

• To review the progress of dual-doping strategies in RuO2 or IrO2 for acidic OERs.
• To discuss the mechanisms of OERs and the evolution of dual-doping catalyst development.
• To provide insights into challenges and future prospects for dual-doping in acidic OERs.

Main Methods:

• Summarizing existing literature on dual-doping in RuO2 and IrO2 for acidic OERs.
• Examining the development history from experimental approaches to machine learning (ML) and theoretical screening.
• Discussing the three main mechanisms of OERs.

Main Results:

• Dual doping optimizes catalyst electronic and coordination environments, creating vacancies and strain for high performance.
• The review covers the progression of dual-doping catalyst development, including ML-assisted strategies.
• Synergistic effects of dual elements are key to achieving enhanced catalytic activity and stability.

Conclusions:

• Dual doping is a promising strategy for advancing catalysts used in acidic oxygen evolution reactions.
• Further research is needed to address remaining challenges and explore future prospects in this field.
• This review offers valuable insights for designing next-generation electrocatalysts for water electrolysis.