Transition Metals-Based Water Splitting Electrocatalysts on Copper-Based Substrates: The Integral Role of...

Area of Science:

• Materials Science
• Electrochemistry
• Renewable Energy

Background:

• Electrocatalytic water splitting offers a sustainable route to high-purity hydrogen.
• Transition metal electrocatalysts are explored as alternatives to precious metals for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER).
• In situ material growth on conductive substrates can significantly reduce overpotential and influence catalyst morphology.

Purpose of the Study:

• This review critically discusses recent advancements in HER and OER electrocatalysts.
• Focuses on electrocatalysts grown on copper-based substrates.
• Highlights the impact of substrate morphology, design, and preparation methods on nanoarray electrocatalysts.

Main Methods:

• Review of literature on electrocatalysts for water splitting.
• Analysis of copper-based substrates (foam, foil, mesh) for electrocatalyst applications.
• Discussion of in situ growth techniques and their effect on nanoarray morphology.

Main Results:

• Copper-based substrates offer cost-effectiveness, high conductivity, and unique structural properties.
• In situ growth on copper substrates significantly impacts electrocatalyst morphology and performance.
• Advancements in nanoarray design and preparation are crucial for efficient HER and OER.

Conclusions:

• Copper-based substrates are highly promising for developing efficient and cost-effective electrocatalysts for water splitting.
• Optimizing nanoarray morphology and preparation on these substrates is key to advancing green hydrogen production.
• Further research into substrate-catalyst interactions can unlock enhanced electrocatalytic activity.