Fabrication methods, structure design and durability analysis of advanced sealing materials in proton exchange membrane fuel cells

耐久性 质子交换膜燃料电池 材料科学 制作 燃料电池 复合材料 化学 工程类 化学工程 生物化学 医学 病理 替代医学
作者
Dongcai Shi,Lang Cai,Caizhi Zhang,Dongfang Chen,Zehua Pan,Zhe Kang,Yang Liu,Jiujun Zhang
出处
期刊:Chemical Engineering Journal [Elsevier BV]
卷期号:454: 139995-139995 被引量:44
标识
DOI:10.1016/j.cej.2022.139995
摘要

• Fabrication methods, structure design and durability analysis of advanced sealing materials in proton exchange membrane fuel cells. • The sealing structures and assembly methods of Proton exchange membrane fuel cell are summarized. • Detailed durability analysis of the sealing material was carried out. • For the first time, the durability test and test methods of the seal are summarized. In a PEMFC stack, there are many cells and each single cell has a multi-layer structure. The bipolar plates, membrane electrode assembly (MEA) and other components must be strongly sealed with gaskets and/or glue. The stable and reliable sealing is crucial for PEMFC stacks in terms of the lifetime. However, the expansion, shrinkage and aging of the sealing leads to the failure of fuel cell due to the complex operation environment. Thus, the function of sealing components plays important roles in fuel cell. In this work, the recent research of fabrication methods, structure design and durability analysis of the sealing materials are comprehensively reviewed and analyzed considering the key properties, including surface morphology, density, hardness, mechanical properties and chemical properties of the sealing materials under various test environments. The novelty of this study is that the failure mechanisms of PEMFC seal materials are also discussed from the perspective of both experimental examination and theoretical modeling. At last, technical challenges are summarized and the possible future research directions are proposed, which may contribute to overcome the challenges of prolonging the durability of the PEMFC stacks in the future researches.
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