温湿度对燃料电池质子膜气体透过率的影响  

Effect of temperature and humidity on the gas permeability of proton membranes for fuel cells

作　　者：王军 吴爽 李文浩 任俊 于萌 赵淑会 王晓璇 赵燕 肖经纬 宋龙波 WANG Jun;WU Shuang;LI Wenhao;REN Jun;YU Meng;ZHAO Shuhui;WANG Xiaoxuan;ZHAO Yan;XIAO Jingwei;SONG Longbo(Zibo Institute of Measurement Technology,Zibo 255000,China;Shandong Dongyue Future Hydrogen Energy Materials Co.,Ltd.,Zibo 256401,China)

机构地区：[1]淄博市计量技术研究院,山东淄博255000 [2]山东东岳未来氢能材料股份有限公司,山东淄博256401

出　　处：《工程塑料应用》2024年第4期135-140,共6页Engineering Plastics Application

基　　金：山东省市场监管局科技计划项目,国家重点研发计划项目(2021YFB4001102)。

摘　　要：燃料电池质子膜的气体渗透不仅会降低燃料电池的燃料利用率,还会直接影响燃料电池的性能和使用寿命,因此气体透过率成为评价膜性能的重要指标。为模拟电池膜运行条件下的氢气渗透状况,提高电池膜气体渗透检测效率,采用压差法-气相色谱仪联用技术以及电磁加热-水蒸气增湿手段对不同型号的燃料电池质子膜进行氢气透过率测试,研究了不同温度、湿度条件对燃料电池质子膜氢气透过率的影响。同时,气相色谱选用耐水解型色谱柱,同步实现了不同温、湿度条件下水蒸气透过率的检测。结果表明,温度对燃料电池质子膜氢气透过率有显著影响。不同型号燃料电池膜的氢气透过率均随温度的上升呈指数型增长。在较低温度下,相对湿度与氢气透过率呈线性依赖。高温条件下氢气透过率随湿度升高而增长的趋势变缓。在不同温湿度条件下,水蒸气的渗透与氢气渗透的变化规律相似,随温度和湿度升高而增长。通过多种技术串联,建立相对完善的燃料电池膜氢气渗透检测体系,实现不同气体的同步检测,弥补国标测试方法的不足。The gas permeation through the proton membrane of fuel cell not only reduces the fuel utilization rate of the fuel cell,but also directly affects the performance and service life of the fuel cell.Therefore,gas permeation rate has become an important indicator for evaluating membrane performance.To simulate the gas permeation status of hydrogen fuel cell membranes under operating conditions and to improve the efficiency of proton membrane gas permeation detection,a combination of pressure difference method and gas chromatograph technology to test the hydrogen permeability of different types of fuel cell proton membranes was used through electromagnetic heating water vapor humidification method.The results of effect of different temperature and humidity conditions on the hydrogen permeability of fuel cell proton membranes were obtained.Meanwhile,a water-resistant chromatographic column was used in gas chromatography and the detection of water vapor transmittance under different temperature and humidity conditions was realized simultaneously.The results indicate that temperature has a significant impact on the hydrogen permeability of fuel cell proton membranes and hydrogen permeability increases exponentially with the increase of temperature among different types of fuel cell membranes.At lower temperatures,relative humidity is linearly dependent on hydrogen permeability.The trend of hydrogen permeability increasing with increasing humidity slows down under high temperature conditions.The permeation of water vapor follows a similar pattern to that of hydrogen permeation,increasing with increasing temperature and humidity under different temperature and humidity.A relatively complete fuel cell membrane gas permeability detection system is established,achieving synchronous detection of hydrogen and water vapor,making up for the shortcomings of national standard testing methods by creating multiple technologies connected in series.

关 键 词：质子交换膜 氢气渗透 水蒸气渗透 温度 相对湿度 

分 类 号：O642.5[理学—物理化学]