In this work, the cell performance of high temperature PEM fuel cells based on ABPBI membranes was experimentally measured in details. The ABPBI-based high PEM fuel cell was fabricated by using ABPBI-based gas diffusion electrodewith directly adding carbon-supported- catalyst to a homogeneous ABPBI solution prior to deposition and its membrane electrode assembly. The effects of various Pt loading of the catalyst layer, as well as the effect of different operating conditions were studied. The cell performance was evaluated using dry hydrogen/oxygen gases, which added advantage of eliminating the complicated humidification system of nafion cells. The measured results reveal that a catalyst layer with the higher Pt loading has a higher cell performance. In addition, better cell performance is noted for a case with higher cell temperature or higher cathode flowrate.
This paper experimentally investigates the dynamic response of a single fuel cell under various dynamic loadings with different operating conditions. Three kinds of loadings are applied to the PEM fuel cell and they are simulated NEDC mode, simulated 10/15 mode, and modified mode. The operating conditions are set at different cell temperatures, humidification temperatures, and stoichiometric rates during each test to study the effects of these parameters on the cell performance of a PEM fuel cell. The cell performance is found increased with increasing cell temperature in the range of 45-65°C. On the other hand, there exist optimal conditions for the humidification temperature and the stoichiometric rate at 70°C/60°C and 1.5/2.0 on the anode and cathode sides, respectively.
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