Study on the Influence of Different Inlet Humidification Temperatures on the PEMFC of Tri-Serpentine Channel

A three-dimensional single-phase, isothermal tri-serpentine flow channel model of PEMFC was established in this paper,. Through the research method of numerical simulation, the influence of the inlet humidification temperature of 18 °C, 28 °C, 38 °C, 48 °C on PEMFC was analyzed. It is found that the overall performance of PEMFC is better at lower inlet humidification temperatures. With the increase of inlet humidification temperature, the oxygen concentration and water concentration in the flow channel will decrease, the partial pressure of oxygen in the flow channel will decrease, the relative humidity of oxygen will increase, and the current density of GDL and CL middle surface will decrease, which will reduce the performance of PEMFC.