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The paper firstly examines the degradation mechanisms of membrane electrode assemblies and bipolar plates (mainly including the mechanical, thermal and chemical degradation of proton exchange membranes), platinum dissolution and carbon support corrosion within the catalyst layer, carbon corrosion in the gas diffusion layer as well as the sealing integrity and corrosion resistance of bipolar plates. Subsequently, current durability evaluation methodologies for individual components are reviewed in light of their respective degradation mechanisms. It is identified that existing evaluation approaches exhibit significant variations in test conditions, performance metrics and aging protocols, leading to challenges such as lack of standardized criteria, limited test coverage and poor correlation with real-world operating conditions. Finally, drawing upon the understanding of component-specific degradation behaviors and the state of the art in evaluation techniques, it is proposed that the development of a systematic, accelerated and operationally representative durability testing framework represents a critical direction for future research and industrial advancement.
, authors=Gang Zhu
1, Pengfei Ma
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首先探讨了膜电极和双极板的退化机理,主要包括质子交换膜的机械、热、化学退化,催化层的铂降解和碳载体腐蚀,气体扩散层的碳腐蚀,以及双极板的气密性和耐腐蚀性问题,然后结合各组件的退化机理对当前各组件的耐久性测评技术进行了总结,提出当前各测评技术在测试条件、评价指标及老化方法上存在差异,指出当前测评体系存在标准不统一、测试覆盖度不足、与真实工况关联度不高等问题。最后,结合各组件的退化机理及测评技术研究现状,提出构建系统化、加速化、工况化的耐久测试标准体系是未来研究与产业发展的关键方向。
, authors=朱刚
1, 马鹏飞
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