@Article{ee.2024.041205,
AUTHOR = {Yingli Zhu, Jiachi Xie, Mingwei Zhu, Jun Zhang, Miaomiao Li},
TITLE = {The Effects of the Geometry of a Current Collector with an Equal Open Ratio on Output Power of a Direct Methanol Fuel Cell},
JOURNAL = {Energy Engineering},
VOLUME = {121},
YEAR = {2024},
NUMBER = {5},
PAGES = {1161--1172},
URL = {http://www.techscience.com/energy/v121n5/56340},
ISSN = {1546-0118},
ABSTRACT = {The open ratio of a current collector has a great impact on direct methanol fuel cell (DMFC) performance. Although a number of studies have investigated the influence of the open ratio of DMFC current collectors, far too little attention has been given to how geometry (including the shape and feature size of the flow field) affects a current collector with an equal open ratio. In this paper, perforated and parallel current collectors with an equal open ratio of 50% and different feature sizes are designed, and the corresponding experimental results are shown to explain the geometry effects on the output power of the DMFC. The results indicate that the optimal feature sizes are between 2 and 2.5 mm for both perforated and parallel flow field in the current collectors with an equal open ratio of 50%. This means that for passive methanol fuel cells, to achieve the highest output power, the optimal feature size of the flow field in both anode and cathode current collectors is between 2 and 2.5 mm under the operating mode of this experiment. The effects of rib and channel position are also investigated, and the results indicate that the optimum pattern depends on the feature sizes of the flow field.},
DOI = {10.32604/ee.2024.041205}
}