Recent Advances Regarding Precious Metal-Based Electrocatalysts for Acidic Water Splitting

Area of Science:

• Electrochemistry
• Materials Science
• Green Energy

Background:

• Proton exchange membrane (PEM) water electrolysis is a key technology for green hydrogen generation.
• Catalyst instability under operating conditions hinders practical application of PEM water electrolysis.
• Precious metal-based materials are currently the only option for stable, high-activity acid catalysts.

Purpose of the Study:

• To review and analyze recent progress in precious metal catalysts for PEM water electrolysis.
• To clarify the role of precious metals in promoting water splitting.
• To identify crucial directions for developing next-generation PEM water electrolysis catalysts.

Main Methods:

• Literature review of recent advancements in precious metal catalysts.
• Analysis of catalyst synthesis and performance factors.
• Investigation into the role of precious metals in water electrolysis.

Main Results:

• Precious metals are critical for achieving long-term stability and high activity in acidic conditions.
• Synthesis strategies for high-performance precious metal catalysts have been summarized.
• Factors influencing catalytic performance have been analyzed.

Conclusions:

• Reducing precious metal loading, enhancing catalytic activity, and improving catalyst lifetime are vital for future PEM water electrolysis.
• Further research is needed to overcome remaining challenges for practical implementation.
• Future perspectives are provided to guide the development of advanced catalysts.