Rational Design of Nickel-Based Heterostructured Electrocatalysts for Oxygen Evolution Reaction: Mechanisms,...

Area of Science:

• Materials Science
• Electrochemistry
• Green Energy

Background:

• Green hydrogen production via water electrolysis is crucial for addressing the global energy crisis.
• Highly active electrocatalysts are essential for efficient water electrolysis, particularly for the oxygen evolution reaction (OER).
• Nickel-based heterostructures offer a promising strategy to overcome OER kinetic limitations.

Purpose of the Study:

• To review nickel-based heterostructured electrocatalysts for efficient hydrogen production.
• To elucidate the relationship between micro-interfaces and OER mechanisms.
• To highlight advanced strategies for optimizing OER performance and discuss industrial application challenges.

Main Methods:

• Discussion of three basic OER mechanisms and their relation to micro-interfaces.
• Review of recent developments in nickel-based heterostructured material systems.
• Focus on performance optimization strategies including doping, defect control, and crystal phase engineering.

Main Results:

• Interface synergy in nickel-based heterostructures significantly enhances catalytic performance for OER.
• Interfacial synergistic effects accelerate charge transfer and regulate intermediate adsorption.
• Optimization strategies like doping, defect control, and crystal phase engineering further improve oxygen evolution performance.

Conclusions:

• Nickel-based heterostructures are key to developing high-performance electrocatalysts for green hydrogen production.
• Integration of in situ characterization, theoretical calculations, and AI design is vital for controllable preparation of active sites.
• This review provides theoretical references for advancing the green hydrogen energy industry through improved OER electrocatalysts.