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Related Concept Videos

Ion Exchange01:17

Ion Exchange

1.1K
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Potentiometry: Membrane Electrodes01:15

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Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
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Updated: Jan 16, 2026

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
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Materials Engineering for High Performance and Durability Proton Exchange Membrane Water Electrolyzers.

Pablo A García-Salaberri1,2, Lonneke van Eijk3, William Bangay4

  • 1Department of Chemical and Environmental Technology (ESCET), Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Móstoles, Madrid, Spain.

ACS Applied Energy Materials
|September 26, 2025
PubMed
Summary
This summary is machine-generated.

Proton exchange membrane water electrolyzers (PEMWEs) are key for green hydrogen. This review highlights challenges and strategies for advancing PEMWE technology, focusing on materials and performance for the energy transition.

Keywords:
PEMWEcharacterizationdesigndurabilitymaterialsmodelingperformance

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Technology

Background:

  • Proton exchange membrane water electrolyzers (PEMWEs) are crucial for the global green energy transition, offering sustainable hydrogen production with renewable energy sources.
  • Despite their potential, PEMWEs face significant challenges including high costs, performance limitations, and durability issues, especially with low iridium loading.

Purpose of the Study:

  • To critically review current developments, identify knowledge gaps, and outline strategic pathways for advancing PEMWE technology.
  • To provide a unified perspective from academia, research centers, and industry on the future of PEMWE engineering.

Main Methods:

  • Comprehensive literature review and analysis of key aspects in PEMWE technology.
  • Focus on materials engineering of cell components (catalyst layer, membrane, transport layers, bipolar plates, gaskets).
  • Integration of modeling and characterization techniques for PEMWE development.

Main Results:

  • Identified critical areas for improvement including low iridium loading operation, membrane durability, and advanced transport layers.
  • Discussed the importance of multiscale transport layers and novel flow field designs (porous and non-porous).
  • Highlighted the necessity of multiphysics modeling and versatile characterization techniques.

Conclusions:

  • Advancing PEMWE technology requires integrated materials engineering and complementary modeling/characterization approaches.
  • Addressing current challenges is essential to unlock the full potential of PEMWEs for a sustainable hydrogen economy.
  • This review offers essential knowledge for researchers and engineers to tackle future challenges in PEMWE development.