Abstract
The dynamic load characteristics of a proton exchange membrane fuel cell (PEMFC) with a dead-ended anode were studied. In a 70 h experiment, the effects of anode pressure, operating temperature, and relative humidity of the cathode on the performances of the fuel cell were investigated. The obtained results show that, with different relative humidity of the cathode at 65 °C, dynamic loading has little effect on the performances of fuel cell and the electrochemically active surface area (ECSA). However, the fuel cell operating under dynamic load is unstable when the relative humidity is 50%, and at 50 °C with 100% relative humidity, applying a dynamic load has a significant influence on the fuel cell performances. Scanning electron microscopy (SEM) showed that both the upstream and middle catalyst layers of the cell were unchanged, whereas the down-stream cathode catalyst layer thinned as a response to dynamic load.
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Funded by the National Natural Science Foundation of China (Nos. 51476119 and 51576147), the Natural Science Foundation of Hubei Province (No. 2016CFA041) and the Fundamental Research Funds for the Central Universities (No.2017 IVA 031)
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Luo, F., Chen, B., Yang, T. et al. Characteristics of dynamic load response of a fuel cell with a dead-ended anode. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 32, 766–771 (2017). https://doi.org/10.1007/s11595-017-1665-z
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DOI: https://doi.org/10.1007/s11595-017-1665-z