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February 27, 2026Energy Conversion and ManagementOpen Access

Predicting the impact of ambient temperature on PEM fuel cell cold start-up catalyst degradation with a multi-domain and multi-scale modeling framework

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Authors

DRDavor RašićAKAndraž KravosTKTomaž Katrašnik

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Overview

Multi-domain modeling predicts cold start-up catalyst degradation in PEM fuel cells, suggesting strategies for improved durability.

Key Points

  • This research aims to predict the impact of ambient temperature on the cold start-up behavior and catalyst degradation of PEM fuel cells.
  • Developed a multi-domain and multi-scale modeling framework
  • Validated the model against FCEV start-up data from −18 °C to 35 °C
  • Incorporated a mechanistic catalyst degradation model addressing platinum dissolution and carbon support corrosion
  • Analyzed spatio-temporal distributions of reactions during cold start-up
  • Observed that sub-zero starts resulted in approximately 100 times higher per-start ECSA loss compared to warm starts
  • Simulation results indicated severe local hydrogen starvation and high electrode potentials due to ice-induced heterogeneities
  • Provided peak instantaneous ECSA degradation rates two orders of magnitude higher during cold starts than warm starts

Cite This Study

Rašić et al. (2026) studied this question.

synapsesocial.com/papers/69a134fbed1d949a99abe733https://doi.org/10.1016/j.enconman.2026.121254
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Also Consider

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  4. 4A multi-scale model for PEMFC performance degradation coupled with catalyst layer microstructure evolution2026 · 4 citations
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