Investigating the stability and degradation of hydrogen PEM fuel cell |
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Affiliation: | 1. Department of Electronic Engineering, University of York, York YO10 5DD, UK;2. Department of Engineering and Technology, Semi-Arid Federal University, Francisco Mota Av., Mossoro 59625-900, Brazil |
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Abstract: | The hydrogen proton exchange membrane (PEM) fuel cells are promising to utilize fuel cells in electric vehicle (EV) applications. However, hydrogen PEM fuel cells are still encountering challenges regarding their functionality and degradation mechanism. Therefore, this paper aims to study the performance of a 3.2 kW hydrogen PEM fuel cell under accelerated operation conditions, including varying fuel pressure at a level of 0.1–0.5 bar, variable loading, and short-circuit contingencies. We will also present the results on the degradation estimation mechanism of four fuel cells working at different operational conditions, including high-to-low voltage range and high-to-low temperature variations. These experiments examine over 180 days of continuous fuel cell working cycle. We have observed that the drop in the fuel cells' efficiency is at around 7.2% when varying the stack voltage and up to 14.7% when the fuel cell's temperature is not controlled and remained at 95 °C. |
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Keywords: | Fuel cell degradation Fuel cell performance under ramp pressure CDF model for fuel cell degradation Fuel cell performance under purging routines |
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