摘要

燃料电池是目前最具潜力的氢能利用方式之一。氢气循环系统主要用于将未反应完全的氢气循环输送至电堆阳极,提高氢气利用率及电堆效率,是燃料电池的核心组成部分。综述了几种燃料电池氢气循环系统方案,分析了不同方案的工作原理,重点介绍了引射器方案以及氢气循环泵方案,对比了不同氢气循环方案的优缺点,指出了未来燃料电池氢气循环系统的研究热点及发展方向。

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