Ezperimental investigation of CO2 bubbles behavior in the anode flow fields of micro direct methanol fuel cells

摘要：

CO2 gas bubbles have a great effect on the μDMFC Micro Direct Methanol Fuel Cell) as the anode resultants. Visualization technique is one of the most important tools to study the formation, movement, and removal of CO2 gas bubbles. This paper presents an air-breathing micro direct methanol fuel cell made of PMMA for the visualization research. Four types of flow fields are fabricated in the anode plates. Different from the traditional μDMFCs, the stainless steel mesh is adopted as the current collector. The observation and study of CO2 bubbles behavior show that the quantities and bulks of CO2 gas bubbles increased as the current densities became higher. In addition, anode methanol solution flow rates and cell orientations also have complicated influence on the μDMFC performance.

关键词： μDMFC visualization current densities flow rates cell orientations

作者: Bo Zhang Yufeng Zhang Peng Zhang Xiaowei Liu

作者单位: MEMS Center, Harbin Institute of Technology, Harbin, China 150001

会议类型: 国际会议

会议名称: 第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology

会议地点: 沈阳

会议语种:英文

页码: 1-6

在线出版日期: 2008-09-15（万方平台首次上网日期，不代表论文的发表时间）