| Energy is artery of the national economy development, new energy utilization rate is gradually increased in recent years, Among them, the hydrogen energy is considered to be the most ideal new energy. The proton exchange membrane fuel cell using hydrogen as fuel is a efficient and clean electric power generator which converts chemical energy into electrical energy. Currently A lumped parameter model is often used to analysis the performance of proton exchange membrane fuel cell, but it can not reflect the effect of the internal components of the battery on the performance of the system. This paper establish a gas diffusion layer (GDL) model of one-dimensional structure along the membrane thickness direction for PEMFC. Through the analysis of the gas diffusion process in the cathode and anode and the distribution of temperature along the direction of membrane thickness, the influence of the air total pressure and temperature on the battery output voltage is studied. Comparing with the published experimental data under the different operation conditions and the results of numerical simulation of lumped parameter model, the one dimensional model in this paper fits well with the experimental results. The model has a broader application range compared with the lumped parameter model, and can provide more help for the optimization design and control of PEMFC. |
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