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Updated: Apr 14, 2026

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

Integrating Flow Field Geometries within Porous Electrode Architectures for Enhanced Flow Battery Performance.

Baichen Liu^1,2, Rémy Richard Jacquemond¹, Vanesa Muñoz-Perales³

¹Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands.

Small (Weinheim an Der Bergstrasse, Germany)

|October 24, 2025

Summary

This summary is machine-generated.

Researchers developed a new micro-patterning method for redox flow battery (RFB) electrodes. This scalable technique enhances mass transport and reduces costs, improving RFB performance for grid-scale energy storage.

Keywords:

electrochemical energy storage flow field designs mass transport non‐solvent induced phase separation porous electrodes redox flow batteries

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Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Grid-scale renewable energy requires efficient and affordable storage solutions.
Redox flow batteries (RFBs) are promising for grid storage but face high costs due to electrode limitations.
Current electrodes need optimization for surface area, mass transport, and pressure drop.

Purpose of the Study:

To introduce a micro-patterning strategy for fabricating advanced RFB electrodes.
To enhance mass transport and electrochemical performance in RFBs.
To present a scalable and cost-effective manufacturing approach for RFB electrodes.

Main Methods:

Utilized non-solvent induced phase separation (NIPS) with integrated micro-patterning.
Imprinted groove and pillar micro-patterns inspired by fuel cell flow fields.
Tested electrodes in symmetric iron and all-vanadium full flow cells.

Main Results:

Pillar-patterned electrodes with an interdigitated flow field significantly reduced mass transfer resistance.
Improved electrochemical performance was observed in RFBs utilizing the new electrodes.
The strategy maintained a low-pressure drop across the electrodes.

Conclusions:

Micro-patterning during NIPS fabrication is a viable strategy for advanced RFB electrodes.
This approach enhances mass transport and electrochemical performance.
The developed electrode design strategy can boost RFB power density and economic viability for grid-scale applications.