质子交换膜燃料电池(PEMFC)在缓解全球能源危机和解决环保难题方面提供了创新性的解决方案。在PEMFC中，双极板作为关键组件备受关注。其中，金属双极板因其成本低廉、材料容易获取、导电性能卓越以及易于机械加工而备受关注。然而，金属双极板目前仍然面临耐久性和导电性方面的挑战。为解决这些问题，通常采用表面改性涂层的方法对金属双极板进行处理。综述了近年来关于金属双极板表面改性涂层的研究进展，涵盖了材料设计、沉积工艺和涂层性能等多个方面。在此基础上，基于导电性、耐蚀性、膜基结合力以及疏水性等测试结果，分析了不同涂层对金属双极板表面改性效果的影响。同时，展望了各种类型改性涂层未来的研究趋势。这些研究成果为改善金属双极板的性能、进一步推动PEMFC表面改性技术的发展提供了有益的指导和启示。

Proton Exchange Membrane Fuel Cell(PEMFC) provide an innovative solution for mitigating the global energy crisis and addressing environmental challenges. In PEMFC, bipolar plates have attracted much attention as key components. Among them, metal bipolar plates have attracted much attention due to their low cost, easy material acquisition, excellent conductivity and ease of mechanical processing. However, metal bipolar plates still face challenges in terms of durability and conductivity. To address these issues, surface modified coatings are commonly used to treat metal bipolar plates. In this work, the research progress on surface modified coatings for metal bipolar plates in recent years was reviewed, which included multiple aspects such as material design, deposition processes and coating properties. On this basis, the influence of different coatings on the surface modification effect of metal bipolar plates was analyzed based on test results such as conductivity, corrosion resistance, film substrate bonding strength and hydrophobicity. Meanwhile, the future research trends of various types of modified coatings were discussed. These research results provided useful guidance and inspiration for improving the performance of metal bipolar plates and further promoting the development of PEMFC surface modification technology.