A tapered serpentine flow field for the anode of micro direct methanol fuel cells

作者：Zhang, Yufeng^*; Zhang, Peng; Yuan, Zhenyu; He, Hong; Zhao, Youran; Liu, Xiaowei

来源：Journal of Power Sources, 2011, 196(6): 3255-3259.

DOI：10.1016/j.jpowsour.2010.12.012

• Micro direct methanol fuel cell
• Anode
• Tapered single serpentine
• Mass transport

We develop a self-breathing micro direct methanol fuel cell (mu DMFC) characterized by a new anode structure with tapered single serpentine flow fields to improve cell performance. Compared with the conventional single serpentine flow field, this new design enhances the methanol mass transport efficiency and the exhaust resultant (CO(2)) rate due to the increasing pressure difference between adjacent flow channels. The mu DMFCs with two single serpentine flow fields are fabricated using silicon-based micro-electro-mechanical systems (MEMS) technologies and are tested at room temperature. The experimental results reveal that the new tapered single serpentine flow field exhibits a significantly higher peak power density than that of the conventional flow field, demonstrating a substantial increase of 17.9% in mass transport coefficients.

• 出版日期2011-3-15
• 单位哈尔滨工业大学