Energy efficient cold start of a Polymer Electrolyte Membrane Fuel Cell coupled to a thermochemical metal hydride preheater

Daniel Melnik, Inga Bürger, Jens Mitzel, Julian Käß, Patrick Sarkezi-Selsky, Thomas Jahnke and Torsten Knöri

Applied Energy, 2024, vol. 359, issue C, No S0306261923019499

Abstract: Cold start is still a major factor for proton exchange membrane (PEM) fuel cell degradation. Using a metal hydride-based preheater can significantly reduce the time to reach temperatures above 0 °C without consuming any extra energy due to two specific features of the fundamental thermochemical reaction: First, thermal energy provided during fuel cell operation as waste energy can be stored long-time and loss-free for the next cold start event. Second, providing a hydrogen pressure of 8 bar immediately triggers the exothermal absorption reaction to heat up a system from temperatures as low as −20 °C.

Keywords: Cold start; Degradation; PEM fuel cell; Metal hydride; Preheater; Icing (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.apenergy.2023.122585

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