Liquid Water Transport in Porous Electrodes

多孔电极中的液态水传输

• 批准号: 9803364
• 负责人: Trung Nguyen
• 金额: $ 18.52万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-01 至 2002-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9803364&HistoricalAwards=false
• 关键词: Liquid; Water; Transport; Porous; Electrodes

Abstract Proposal No: 9803364 Proposal Type: Investigator Initiated Principal Investigator: Trung V. Nguyen Affiliation: University of Kansas This grant is awarded through the Separations and Purification Program sub-element of the Interfacial, Transport and Separations Program of the Chemical and Transport Systems Division. The principal investigator is Dr. Trung Nguyen at the University of Kansas. The research will attempt to improve the performance of fuel cells. The technology is based on increasing the efficiency of water management through an interdigitated flow field design of the electrodes. A model will be developed to describe two-phase flow through a porous electrode. The model will be used along with a voltage stepping scheme to study the effects of liquid water distributions on the electrodes. Results from the work will help determine optimal operating conditions and design parameters for the interdigitated flow field. The proton exchange membrane (PEM) fuel cell system is being seriously considered as a power source for electric vehicles, portable electrical devices and remote power generation because of its non-polluting characteristics, theoretical efficiency, and simplicity in design and operation. For the PEM system to be cost effective however, its performance and efficiency in practice need to be further improved. This research will address a significant aspect of improving the performance of PEM fuel cells.

摘要建议编号：9803364提案类型：研究人员发起的首席研究员：Trung V. Nguyen隶属关系：堪萨斯大学这笔赠款是通过化学和运输系统部门界面，运输和分离计划的分离和纯化计划子元素授予的。首席研究员是堪萨斯大学的Trung Nguyen博士。该研究将尝试改善燃料电池的性能。该技术基于通过电极的互插图场设计提高水管理的效率。 将开发模型来描述通过多孔电极的两相流。该模型将与电压步进方案一起使用，以研究液体水分布对电极的影响。 工作的结果将有助于确定相互插入流场的最佳操作条件和设计参数。 质子交换膜（PEM）燃料电池系统由于其非污染特性，理论效率和设计和操作的简单性而被认真考虑为电动汽车，便携式电动设备和远程发电的电源。但是，要使PEM系统具有成本效益，需要进一步提高其实践的性能和效率。这项研究将解决改善PEM燃料电池性能的重要方面。