Electrochemically Deposited Nickel Oxide from Molecular Complexes for Efficient Water Oxidation Catalysis

Area of Science:

• Electrochemistry
• Materials Science
• Catalysis

Background:

• Electrocatalytic water oxidation is crucial for energy conversion technologies.
• Developing efficient and stable electrocatalysts for water oxidation remains a significant challenge.
• Nickel oxyhydroxide is a promising material for electrocatalytic applications.

Purpose of the Study:

• To present a facile electrodeposition method for amorphous nickel oxyhydroxide.
• To utilize well-defined nickel complexes with pyridinedimethanol ligands as single-source molecular precursors.
• To evaluate the electrocatalytic performance of the deposited material for water oxidation.

Main Methods:

• Electrodeposition of amorphous nickel oxyhydroxide from nickel complexes.
• Anodic deposition process without the need for buffering agents.
• Characterization of the deposited nickel oxyhydroxide material.

Main Results:

• A facile and effective electrodeposition method was established.
• The deposited amorphous nickel oxyhydroxide exhibited high robustness.
• The material demonstrated high efficiency in electrocatalytic water oxidation.

Conclusions:

• The developed method provides a straightforward route to synthesize robust amorphous nickel oxyhydroxide.
• The nickel complexes serve as effective single-source precursors for electrodeposition.
• The resulting material shows significant potential for efficient electrocatalytic water oxidation applications.