质子交换膜燃料电池钛双极板研究进展

Research progress of titanium bipolar plate in proton exchangemembrane fuel cell

双极板是质子交换膜燃料电池(PEMFC)中的重要组成部件,其性能对PEMFC的结构稳定性、耐久性、效率和功率密度等起关键作用。金属双极板由于成本较低、力学性能优异以及导电导热性能良好等优点而备受关注。其中,钛金属具有密度低、气密性好、抗拉强度高等特性,且在酸性环境下具有优异的耐蚀性,在PEMFC中有很高的应用价值。钛双极板的耐蚀、导电、疏水、传热、传质等性能受到涂层材料和成形方法的显著影响。因此,文章首先介绍了双极板在PEMFC中的功能及相关要求,然后综述了近年来在PEMFC钛双极板涂层材料和成形方法两个方面的主要研究成果,并对其未来的研究方向进行了展望。

The bipolar plate is a crucial component of the proton exchange membrane fuel cell(PEMFC),with their performance playing a key role in the structural stability,long-term durability,efficiency,and power density.Metal bipolar plates have attracted much attention due to their low cost,outstanding mechanical properties,and effective electrical and thermal conductivity.Among these materials,titanium possesses low density,excellent airtightness,high tensile strength,and exceptional corrosion resistance in acidic environments,which makes them highly promising for use in PEMFCs.However,the corrosion resistance,electrical conductivity,hydrophobicity,and heat and mass transfer properties of titanium bipolar plates are significantly influenced by the coating materials and forming methods.Therefore,this paper first introduce the functions and requirements of bipolar plates in PEMFC.It then reviews the main research findings from recent years regarding the coating materials and forming methods of titanium bipolar plates,and concludes with a discussion of future research directions.