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Investigate the impact of a methanol antifreeze shut-down strategy on degradation and freeze-start dynamics in a 4 kW proton exchange membrane fuel cell system.

July 28, 2025International Journal of Hydrogen EnergyOpen Access

Impact of antifreeze shut-down strategy on performance degradation and freeze start of a proton exchange membrane fuel cell system

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Authors

GRGema Montaner RíosDeutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)FBFlorian BeckerDeutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)JSJohannes SchirmerDeutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

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Implication

Experimental study demonstrates regenerated performance and reliable cold start-ups in proton exchange membrane fuel cells, indicating enhanced durability for subzero heavy-duty applications.

Key Points

Investigate the impact of a methanol antifreeze shut-down strategy on degradation and freeze-start dynamics in a 4 kW proton exchange membrane fuel cell system.
Tested a 4 kW PEMFC system across storage temperatures ranging from +3 °C to −20 °C using two stacks with differing initial degradation states.
Compared antifreeze shut-down procedures employing 25 vol % and 40 vol % methanol solutions against baseline gas purging strategies.
Methanol provided a cell-washing effect that regenerated stack performance, producing negative degradation rates across repeated freeze starts.
Antifreeze prevented ice formation during subzero storage, though lower temperatures and higher methanol concentrations prolonged start-up times relative to gas purging.

Cite This Study

Ríos et al. (2025) studied this question.

synapsesocial.com/papers/6a93d22d7e54902437b93ad1 https://doi.org/10.1016/j.ijhydene.2025.150531

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Implication

Experimental study demonstrates regenerated performance and reliable cold start-ups in proton exchange membrane fuel cells, indicating enhanced durability for subzero heavy-duty applications.

Impact of antifreeze shut-down strategy on performance degradation and freeze start of a proton exchange membrane fuel cell system

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Cite This Study

Impact of antifreeze shut-down strategy on performance degradation and freeze start of a proton exchange membrane fuel cell system

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Cite This Study

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