Characterization of static and dynamic properties of water droplets on fibrous media

纤维介质上水滴的静态和动态特性表征

• 批准号: 360376-2008
• 负责人: Djilali, Nedjib
• 金额: $ 6.98万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=362186
• 关键词: Characterization; static; dynamic; properties; water

Fuel Cells have the potential of providing clean energy conversion for a large range of applications, including residential power and road transportation. Polymer electrolyte membrane (PEM) fuel cells, which are the focus of this research, produce heat and water as by-products. The presence of liquid water can induce flooding of one of the key components, the porous gas diffusion electrodes, and result in "asphyxiation" of the fuel cell as well as degradation. In order to devise appropriate water management strategies, it is necessary to observe and understand the liquid water transport in the complex fibrous media that make up the porous electrodes.  The instrumentation acquired with this infrastructure grant will allow investigation and characterization of surface and interfacial properties of wetted layers of fibrous materials used in the electrodes of polymer electrolyte fuel cells fuel. This information will be directly feed into modelling and development of "smart" gas diffusion layer in collaboration with with leading industrial partners to increase the efficiency, reliability and lifetime of fuel cells.

燃料电池具有为广泛的应用提供清洁能源转换的潜力，包括住宅电力和道路运输。聚合物电解质膜（PEM）燃料电池是本次研究的重点，它产生热量和水作为副产品。液态水的存在会导致关键部件之一（多孔气体扩散电极）被淹没，并导致燃料电池“窒息”和退化。为了设计适当的水管理策略，有必要观察和了解构成多孔电极的复杂纤维介质中的液态水传输。  通过这笔基础设施拨款获得的仪器将能够对聚合物电解质燃料电池燃料电极中使用的纤维材料润湿层的表面和界面特性进行研究和表征。这些信息将直接输入到与领先工业合作伙伴合作的“智能”气体扩散层的建模和开发中，以提高燃料电池的效率、可靠性和寿命。