High-Entropy Amorphous Catalysts for Water Electrolysis: A New Frontier

Area of Science:

• Materials Science
• Electrochemistry
• Catalysis

Background:

• High-entropy amorphous catalysts (HEACs) offer unique advantages for water splitting due to multielement synergy and structural disorder.
• Their flexible coordination, tunable electronics, and abundant active sites enhance catalytic performance and durability.

Purpose of the Study:

• To review recent advancements in HEACs for hydrogen evolution, oxygen evolution, and overall water splitting.
• To highlight the advantages of disorder in HEACs compared to crystalline materials.
• To provide mechanistic insights into HEAC performance.

Main Methods:

• Literature review of recent research on HEACs for water splitting.
• Analysis of catalytic performance benchmarks.
• Discussion of mechanistic insights, including multimetallic synergy, amorphization, and in-situ reconstruction.

Main Results:

• HEACs demonstrate enhanced electrochemical activity and durability for water splitting.
• Disorder-driven features in HEACs provide advantages over crystalline counterparts.
• Multimetallic synergy, amorphization, and in-situ reconstruction cooperatively regulate reaction pathways.

Conclusions:

• HEACs are promising electrocatalysts for efficient and durable water splitting.
• Understanding the interplay of disorder and multielement synergy is crucial for catalyst design.
• Rational design of next-generation amorphous high-entropy electrocatalysts can be guided by these insights.