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质子交换膜燃料电池水管理研究进展
Research Progress in Water Management of Proton Exchange Membrane Fuel Cells
投稿时间:2018-11-19  修订日期:2019-03-11
DOI:
中文关键词:  质子交换膜燃料电池  水管理  中子成像  多相流模型
英文关键词:proton exchange membrane fuel cell: water management  neutron imaging  multiphase flow model
基金项目:国家重点研发计划新能源汽车重大专项(2018YFB106500)
作者单位E-mail
张钦国 潍柴动力新科技研究院 zhangqinguo@weichai.com 
郗富强 潍柴动力 xifuqiang1@weichai.com 
王晓阳 潍柴动力 wangxiaoyang1@weichai.com 
张学伟 潍柴动力 zhangxw@weichai.com 
欧阳明高 清华大学 ouayngmingao@tsinghua.com 
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中文摘要:
      质子交换膜燃料电池(PEMFC)水管理不当会增加内阻阻碍氧还原反应,因此有效的水管理是提高性能和耐久性的关键策略之一。膜脱水、催化剂层溢流、质量传输和流体流动状态等现象会受到流道中水的分布和移动的影响。对PEMFC水管理的关键技术相关文献进行了综述,讨论了改善水管理的各种技术方案,汇总了采用中子成像和电子显微镜等技术对液滴的形成、扩散以及与气体扩散层(GDL)的相互作用进行研究的成果。采用CFD模型和VOF方法模拟燃料电池微通道中的水滴运动和段塞形成也进行了详细的分析。
英文摘要:
      Poor water management will increase internal resistance and hinder oxygen reduction reaction. Therefore, effective water management is one of the key strategies to improve the performance and durability of proton exchange membrane fuel cell (PEMFC). The phenomena of membrane dehydration, catalyst layer overflow, mass transfer and fluid flow state will be affected by the distribution and movement of water in the flow channel. In this paper, the related literature on key technologies of PEMFC water management is reviewed, and various technical solutions to improve water management are discussed. It is found that the formation and diffusion of liquid droplets and their interaction with gas diffusion layer (GDL) have been extensively studied by using neutron imaging and electron microscopy. The CFD model and VOF method were used to simulate the movement of water droplets and slug formation in fuel cell micro channels.
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