Research on the influence of gradually shrinking flow channel structure on the performance of proton exchange membrane fuel cells
LIU Qiang
HAO Min
Abstract：Based on Fluent software,numerical simulation and performance comparison are conducted on the proton exchange membrane fuel cell model with a gradually narrowing flow channel and the battery model with a straight flow channel.The results show that in the high current density region,the asymptotic flow channel can significantly improve the performance of the battery by enhancing the gas concentration difference diffusion effect.The contribution of oxygen transmission on the cathode side to the improvement of battery performance is significantly higher than that of hydrogen transmission on the anode side.Batteries with gradually shrinking flow channels perform better than those with straight flow channels.By optimizing the oxygen transport efficiency,improving the liquid water management capability and achieving a reasonable pressure drop within the flow channel,the gradually shrinking flow channel has a good effect on enhancing the operational efficiency of proton exchange membrane fuel cells and saving energy.
Keywords：proton exchange membranefuel cellgradually narrowing flow channelstraight flow channelFluent software
Publication Date：2025-07-25
Online Publishing Date：2025-09-15(First online date of this platform, not the publication date of the document)
Pages：5( 85-89 )