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March 14, 2026International Journal of Hydrogen EnergyOpen Access

Real-time diagnosis of Nafion membrane degradation in PEM electrolyzers via conductivity-based kinetic modeling

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Authors

ASA Sandoval-AmadorANAgustín Sánchez de la NietaJEJ.L. Endrino

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Overview

Experimental work shows conductivity effectively monitors membrane degradation in proton-exchange membrane electrolysers, suggesting a practical assessment tool.

Key Points

  • This work aims to develop a real-time method to monitor Nafion membrane degradation in PEM electrolysers using conductivity measurements.
  • Investigated conductivity of effluent water as a non-invasive variable
  • Established correlation between conductivity and fluoride ion concentration
  • Proposed a mechanistic kinetic model for conductivity as a function of current density and time
  • Validated model under different galvanostatic operating conditions
  • Demonstrated clear correlation between conductivity and fluoride release as a degradation indicator
  • Kinetic model accurately predicts degradation based on applied current density
  • Method allows in-situ monitoring of membrane degradation without interrupting operations
  • Validation shows strong data correlation, supporting practical application

Cite This Study

Sandoval-Amador et al. (2026) studied this question.

synapsesocial.com/papers/69b4faf0b39f7826a300b7ffhttps://doi.org/10.1016/j.ijhydene.2026.154486
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