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Related Experiment Video

Updated: Jun 30, 2025

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

Porous Ceramic Metal-Based Flow Battery Composite Membrane.

Kang Huang^1,2, Feiyan Mu¹, Xiaoxuan Hou^1,2

¹State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China.

Angewandte Chemie (International Ed. in English)

|March 15, 2024

Summary

Researchers developed a novel ceramic composite membrane for metal-based flow batteries. This membrane enhances energy efficiency and cycle life by preventing dendrite accumulation and improving ion selectivity.

Keywords:

anti-dendrite ceramic membrane high areal capacity zinc-based flow battery

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Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

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Published on: August 16, 2018

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Membrane performance is critical for metal-based flow battery efficiency and longevity.
Metal dendrite accumulation causes short circuits and reduces cycle life.

Purpose of the Study:

To develop a robust composite membrane for metal-based flow batteries.
To enhance ion selectivity, conductivity, and dendrite suppression.
To achieve long cycle life and high areal capacity.

Main Methods:

Fabrication of a rigid hierarchical porous ceramic composite membrane with a polyelectrolyte coating.
Integration into an aqueous zinc-iron flow battery.
Characterization using low-field NMR, small-angle X-ray scattering, in situ IR, solid-state NMR, and nano-CT.

Main Results:

Achieved >80% energy efficiency and >1000 hours of stable operation.
Demonstrated an extremely high areal capacity of 260 mAh cm⁻².
Identified hierarchical pores and hydrogen bonding networks as key contributors to performance.

Conclusions:

The developed composite membrane significantly improves flow battery performance and stability.
This work advances the development of next-generation membranes for metal-based flow batteries.
Hierarchical structures and polyelectrolyte coatings are effective strategies for membrane design.