Emerging p-Block Metal-Based Electrocatalysts for Energy Conversion

Area of Science:

• Materials Science
• Electrochemistry
• Catalysis

Background:

• Precious metal catalysts face limitations in cost and sustainability.
• P-block metal catalysts offer unique properties like tunable electronics and oxophilicity.
• Various p-block metal morphologies (single-atom, alloys, compounds) show potential.

Purpose of the Study:

• To review recent advancements in p-block metal electrocatalysts for energy conversion.
• To identify performance and mechanistic trends across different catalyst morphologies.
• To highlight challenges and future research directions for p-block metal catalysts.

Main Methods:

• Literature review of recent progress in p-block metal electrocatalysts.
• Analysis of catalytic efficiencies and selectivities for various reactions (ORR, NRR, CO2RR).
• Discussion of mechanistic insights, including deviations from d-band scaling.

Main Results:

• P-block metal catalysts demonstrate remarkable efficiency and selectivity in energy conversion reactions.
• Tailoring electronic bands, surface morphology, and coordination environments enhances stability and activity.
• Deviations from d-band scaling offer new design strategies for optimization.

Conclusions:

• P-block metal electrocatalysts are a viable and sustainable alternative to precious metals.
• Further research is crucial to address challenges in achieving industrial current densities, long-term stability, and scalable synthesis.
• Understanding fundamental properties will unlock the full potential of p-block metals for next-generation catalysts.