The impact of operating conditions on the performance of proton exchange membrane fuel cells
Using computational fluid dynamics and finite element methods,a multiphysics simulation model of proton exchange membrane fuel cells(PEMFC)is established to verify the rationality of the model,with a focus on analyzing the effects of operating temperature,relative humidity of reactants,and porosity of porous media on the performance of the fuel cell.The research results indicate that the simulation model is in line with reality and has high accuracy;Under high operating voltage,the working temperature,relative humidity of reactants,and porosity of porous media have little effect on the output performance of PEMFC;At low operating voltage,the output performance of PEMFC is better when the operating temperature is low,the relative humidity of reactants is low,and the porosity of porous media is high.This study can provide reference for the operation strategy of fuel cells.
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