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The study aimed to develop a fluorine-free microporous layer for polymer electrolyte fuel cells to minimize environmental impact.

Development of fluorine-free microporous layer composed of thermosetting melamine resin via dry coating process for polymer electrolyte fuel cells

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The study aimed to develop a fluorine-free microporous layer for polymer electrolyte fuel cells to minimize environmental impact.
Applied a dry coating process for fabricating microporous layers using thermosetting melamine resin.
Combined hydrophilic carbon black with melamine resin for binder dispersion.
Optimized heat treatment conditions for low-temperature curing at approximately 250 °C.
Conducted single-cell tests with developed microporous layer applied to the anode.
Achieved high peel strength without the use of PTFE or surfactants.
Performance of single cells was comparable to that of PTFE-based microporous layers.
The proposed process significantly reduces energy consumption and environmental impact of manufacturing.

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Dry coating process produced PFAS-free microporous layer with comparable performance in single cells, suggesting reduced environmental impact.

Ohmura et al. (2026) studied this question.

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Dry coating process produced PFAS-free microporous layer with comparable performance in single cells, suggesting reduced environmental impact.