摘要
简单介绍了质子交换膜燃料电池(PEMFCs)中金属双极板(BPs)在酸性高温环境下易腐蚀的现象,聚苯胺(PANI)作为防腐导电聚合物,常应用于金属BPs表面;介绍了PANI的四种防腐机制和导电机理;同时,汇总了研究纯PANI电导率的相关数据;详细综述了近年来在BPs上对PANI基涂层的五种主要改性策略的研究进展;汇总了金属BPs上改性PANI基涂层的耐腐蚀性、电导率、界面接触电阻性能和形貌;最后,对相应的优化措施进行了展望,旨在为PANI基防腐导电涂层在BPs中的进一步应用提供指导。A concise overview is provided regarding the corrosion behavior of metal bipolar plates (BPs) in proton exchange membrane fuel cells (PEMFCs) under acidic and elevated temperature conditions. Polyaniline (PANI), as an anticorrosive and conductive polymer, is commonly employed as a coating on metal BPs. The four primary corrosion protection mechanisms and the conductive mechanisms of PANI are discussed. Additionally, a summary of the conductivity data for pure PANI is presented. A comprehensive review of recent advancements in five major modification strategies for PANI-based coatings on BPs is provided. This includes a synthesis of the corrosion resistance, conductivity, interfacial contact resistance (ICR), and morphology of modified PANI-based coatings on metal BPs. Finally, prospective optimization strategies are outlined, with the aim of guiding the further application of PANI-based anticorrosive and conductive coatings in BPs.
出处
《物理化学进展》
2025年第2期438-450,共13页
Journal of Advances in Physical Chemistry
