ZHANG Ya, WANG Zhaobin, ZHOU Hua. Influence of operating relative humidity on PEMFC with computational model[J]. CIESC Journal, 2008, (9): 2302-2308.DOI:
A comprehensive along-flow-channel two-dimensional mathematical model with a catalyst layer model for both electrodes was developed for PEMFC to investigate the water transport process within membrane and its effect on fuel cell performance.Computational results showed that as the cathode inlet humidity decreased from 100% to 10%
ohmic loss of electrolyte increased from 0.15 V to 0.36 V due to the dehydration of membrane near the cathode
and activation loss decreased from 0.45 V to 0.22 V with the increase of oxygen concentration.The polarization curves predicted by the model at different relative humidity values agree well with the published experimental data.