氢氧燃料电池电极中液态水的脱离时间研究  

Study on Removal Time of Droplets in the Electrolyte of Hydrogen-Oxygen Fuel Cell

作　　者：程伟 余意 涂正凯[2] CHENG Wei;YU Yi;TU Zhengkai(Shanghai Hydrogen Propulsion Technology Co. Ltd.,Shanghai 201804,China;State Key Laboratory of Advanced Technology for Materials Synthesis andProcessing,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]上海捷氢科技有限公司,上海201804 [2]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《武汉理工大学学报（交通科学与工程版）》2019年第4期652-656,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金面上项目(51476119);湖北省杰出青年基金项目(2016CFA041)资助

摘　　要：水下潜航器用燃料电池的关键问题是水管理.利用液滴的重力来克服黏滞力可有效地实现液滴的自脱离,缓解燃料电池水淹机率.文中通过建立液态水在电极内的传输、涨大,以及脱离模型,研究不同的电极参数对液滴排出时间的影响.结果表明,液滴在电极内的主要停留时间是涨大过程,电极表面液滴的疏水角度越大,临界半径越小,液滴成长的时间也就越长.The key problem of PEMFC for underwater vehicle is water management. Using the gravity of droplets to overcome the viscous force can effectively realize the self-removal of droplets and alleviate the flooding probability of PEMFC. In this paper, the effects of different electrode parameters on the removal time of liquid droplets were studied by establishing the transport, expansion and detachment models of liquid water in the electrode. The results show that the main residence time of liquid droplets in the electrode is the process of grow-up. The larger the hydrophobic angle of the droplet on the electrode surface, the smaller the critical radius, and the longer the droplet growth time.

关 键 词：质子交换膜燃料电池 水管理 重力 脱离时间 

分 类 号：TM911.4[电气工程—电力电子与电力传动]