Liquid Water Transport in Porous Electrodes

提案编号：9803364提案类型：研究者发起首席研究员：Trung V. Nguyen联系：堪萨斯大学该资助通过化学和运输系统部界面，运输和分离项目的分离和纯化项目子元素授予。首席研究员是堪萨斯大学的阮忠博士。这项研究将试图提高燃料电池的性能。该技术的基础是通过电极的交叉流场设计来提高水管理效率。将建立一个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用于研究液态水分布对电极的影响。工作结果将有助于确定交叉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无污染、理论效率高、设计和操作简单等特点，正被人们认真考虑作为电动汽车、便携式电气设备和远程发电的动力源。然而，为了使PEM系统具有成本效益，其性能和效率还需要进一步提高。本研究将解决PEM燃料电池性能改善的一个重要方面。

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.