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Bubble Engineering on Micro-/Nanostructured Electrodes for Water Splitting.

Mengxuan Li¹, Pengpeng Xie¹, Linfeng Yu¹

¹State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.

|November 22, 2023

Summary

This summary is machine-generated.

Micro-/nanostructured electrodes enhance bubble engineering for efficient water splitting. This review details strategies for bubble detachment and transport, optimizing mass transfer and energy efficiency in gas evolution reactions.

Keywords:

bubble engineering bubble kinetics directional transportation localized electric field mass transfer micro-/nanostructured electrode water splitting wettability

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Area of Science:

Electrochemistry
Materials Science
Chemical Engineering

Background:

Bubble behaviors critically influence mass transfer and energy efficiency in gas evolution reactions.
Micro-/nanostructured electrodes are gaining attention due to their combined multiscale structures and surface chemical properties.
Understanding bubble dynamics on these electrodes is key for optimizing electrochemical processes.

Purpose of the Study:

To review current knowledge on bubble engineering on micro-/nanostructured electrodes, specifically for water splitting.
To identify opportunities and provide rationales for designing advanced electrodes.
To consolidate strategies for enhancing bubble detachment and directional transport.

Main Methods:

Review of existing literature on gas wettability on micro-/nanostructured electrodes.
Analysis of the advantages offered by micro-/nanostructured electrodes for mass transfer, electric field intensity, and stability.
Discussion of strategies for bubble detachment and directed movement.

Main Results:

Micro-/nanostructured electrodes improve mass transfer by lowering overpotential, enhancing electrolyte supply, and accelerating bubble growth.
These structures contribute to increased localized electric field intensity and improved electrode stability.
Effective strategies exist for promoting bubble detachment and directional transportation.

Conclusions:

Bubble engineering on micro-/nanostructured electrodes offers significant potential for improving water splitting efficiency.
Further research into rational electrode design and bubble manipulation is crucial for advancing the field.
Optimized bubble behavior is essential for maximizing mass transfer and energy efficiency in electrochemical gas evolution.