质子交换膜燃料电池边界条件对输出特性的影响

张佩杰¹，张婷¹，陈忠言²，吕英波¹，李新海^1*，商显上¹

1.山东建筑大学机电工程学院，山东 济南  250101；

2.山东氢探新能源科技有限公司，山东 济南  250100

摘要：为提高质子交换膜燃料电池（proton exchange membrane fuel cell，PEMFC）输出性能，基于Thermolib搭建PEMFC系统模型，并搭建PEMFC测试平台对模型进行验证，分析工作压力、气体流量、气体相对湿度、电堆工作温度等工作边界条件对电池性能的影响。结果表明：模型精度较高，满足要求；随气体流量、工作温度和工作压力的增加，电池输出性能先升高后降低；随气体相对湿度的增加，电池输出性能逐渐升高；当电池阴、阳极化学计量比分别为1.4、2.0，阴、阳极气体相对湿度均为100%，工作温度为70 ℃，工作压力为250 kPa时，电池的输出性能较好。

关键词：质子交换膜燃料电池；极化特性；运行参数

Influence of boundary conditions on output performance of PEMFC

ZHANG Peijie¹, ZHANG Ting¹, CHEN Zhongyan², LÜ Yingbo¹, LI Xinhai^1*, SHANG Xianshang¹

1.School of Mechanical and Electrical Engineering, Shandong Jianzhu University, Jinan 250101, China;

2.Shandong Fuel Cell Power in Technology Co., Ltd., Jinan 250100, China

Abstract: To improve the output performance of proton exchange membrane fuel cell(PEMFC), a PEMFC system model is built based on Thermolib, and a PEMFC testing platform is established to verify the model. Based on this, the influence of working boundary cond itions such as working pressure, gas flow rate, gas phaserelative humidity, and stack working temperature on the performance of the cell is analyzed. The results indicate that the model has high accuracy and meets the requirements. With the increase of gas flow rate, working temperature, and working pressure, the output performance of the battery first increases and then decreases. As the relative humidity of the gas increases, the output performance of the battery gradually improves. When the stoichiometric ratio of the anode and cathode of the battery is 1.4 and 2.0, the relative humidity of both anode and cathode gases is 100%, the working temperature is 70 ℃, and the working pressure is 250 kPa, the output performance of the battery is good.

Keywords: proton exchange membrane fuel cell; polarization characteristic; running parameter