Abstract The industrial applications of proton exchange membrane fuel cell (PEMFC) technology have attracted tremendous capitals and research attention in the last ten years. However, there are still many bottlenecking problems before the progress triumphs. Among them, a core challenge is the improvement of bipolar plates (BPs). As a key component of PEMFC, the BPs undertake the crucial functions of distributing reactant gases and cooling medium, collecting the electricity generated, exporting waste products, etc. Due to the unique advantages of ultra-thin, high strength, easy-to-mass-produce, etc., metallic BPs have been considered as the promising solution for the automotive and aerospace application scenarios with a strong requirement of power density. However, many challenges remain to be conquered in metallic BPs to fully meet all the requirements in those industrial applications such as corrosion, toxic ion emission and fabrication. The aim of this work is to provide an overview of the important researches in recent years dealing with the most critical problems of metallic BPs before industrial applications. The future studying directions in material and processing methods development are also given towards the wide application of metallic BP PEMFCs.

中文翻译：

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走向大规模应用：PEMFC 金属双极板的挑战与发展综述

摘要 近十年来，质子交换膜燃料电池（PEMFC）技术的工业应用吸引了大量资金和研究关注。然而，在取得进展之前，仍然存在许多瓶颈问题。其中，一个核心挑战是双极板（BPs）的改进。作为 PEMFC 的关键部件，BPs 承担着分配反应气体和冷却介质、收集产生的电力、输出废品等关键功能。 由于超薄、高强度、易于质量的独特优势-生产等，金属BPs被认为是对功率密度有强烈要求的汽车和航空航天应用场景的有前途的解决方案。然而，要完全满足工业应用中的所有要求，如腐蚀、有毒离子发射和制造，金属 BP 仍有许多挑战需要克服。这项工作的目的是概述近年来在工业应用之前处理金属 BPs 最关键问题的重要研究。未来材料和加工方法发展的研究方向也指向金属BP PEMFCs的广泛应用。