李子君¹,王建国²,王树博³,李微微³,谢晓峰^3,4

• 1:浙江海洋大学 船舶与海运学院， 浙江 舟山 316022
• 2:三一重工股份有限公司， 湖南 长沙 430100
• 3:清华大学 核能与新能源技术研究院， 北京 100084
• 4:中国海洋工程研究院(青岛)， 山东 青岛 266555

摘要(Abstract)：

质子交换膜燃料电池(PEMFC)阳极闭口模式潜力巨大，但该模式下运行会引发氮气从阴极向阳极的渗透，导致阳极氢气的摩尔分数降低，PEMFC性能下降，针对这种情况可通过吹扫恢复PEMFC的性能。搭建了阳极闭口模式测试系统，在不同操作条件下进行阳极闭口模式实验，同时建立数学模型研究不同电流密度、化学计量比和温度下，电压和阳极氢气的下降速率以及传输到阳极的氮气积累量，提出实验与仿真结合的方法深入探究闭口模式下气体的传输规律，结果表明：当氢气摩尔分数为0.75时，电压下降到1.4V，此时性能明显下降，提出相应吹扫策略：氢气摩尔分数在0.8时吹扫最为有效。

关键词(KeyWords)： 质子交换膜燃料电池;阳极闭口;氮气渗透;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 崂山实验室科技创新项目(LSKJ202204503)。

作者(Author): 李子君¹,王建国²,王树博³,李微微³,谢晓峰^3,4

DOI: 10.3969/j.issn.1003-9015.2024.01.007

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