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Related Experiment Video

Updated: Jan 16, 2026

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
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Membrane Reinforcement Strategy Using Robust Nanofibers for Durable and Safe AEM Water Electrolysis.

Kwang Won Kim1, Kyung Ah Lee2,3,4, Ji Hyun Lee1

  • 1Textile Innovation R&D Department, Korea Institute of Industrial Technology, 143, Hanggaul-ro, Sangnok-gu, Ansan-si, Gyeonggi-do, 15588, Republic of Korea.

Small (Weinheim an Der Bergstrasse, Germany)
|September 27, 2025
PubMed
Summary

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A new reinforced composite membrane enhances anion exchange membrane water electrolysis for green hydrogen production. This durable membrane improves stability and efficiency, paving the way for safer, cost-effective hydrogen generation.

Area of Science:

  • Materials Science
  • Electrochemistry
  • Chemical Engineering

Background:

  • Anion exchange membrane (AEM) water electrolysis is crucial for sustainable green hydrogen production.
  • Key limitations include low ionic conductivity, swelling, and poor mechanical stability, hindering high-pressure operation.

Purpose of the Study:

  • To develop a reinforced composite membrane (RCM) to overcome AEM limitations.
  • To enhance dimensional stability, ionic conductivity, and mechanical robustness for efficient water electrolysis.

Main Methods:

  • Fabrication of a composite membrane using Fumion FAA-3 ionomer infiltrated into an electrospun polytetrafluoroethylene (PTFE) nanofiber (NF) network.
  • Characterization using electrochemical testing (current density, stability tests, EIS) and mechanical testing (tensile strength, elongation at break).
Keywords:
PTFE nanofiberanion exchange membrane water electrolysiselectrospinninggreen hydrogen productionreinforced composite membrane

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Last Updated: Jan 16, 2026

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Main Results:

  • The PTFE/FAA RCM (≈50 µm thick) achieved a current density of 2.9 A cm⁻² at 2.0 V.
  • Stable operation exceeding 1000 h in 1 m KOH at 70 °C was demonstrated.
  • Significant improvements in mechanical strength and reduced electrical resistances were observed compared to pure ionomer films.

Conclusions:

  • NF-reinforced composite membranes offer a viable solution to enhance AEM durability and performance.
  • This approach mitigates swelling and improves structural integrity, crucial for high-pressure electrolysis.
  • The developed RCM advances the commercialization of efficient and safe green hydrogen production systems.