A Passive Vapor-Feed Direct Methanol Fuel Cell Based on a Composite Pervaporation Membrane

Wu, Zonglin; Wang, Xiaohong; Liu, Litian

doi:10.1109/jmems.2014.2327163

Cited by 9 publications

(1 citation statement)

References 20 publications

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“…However, the complicated system makes it difficult to operate. In addition, many researches employ pervaporation membrane to realize the phase change of methanol . The performance of vapor feed DMFC is proved to be greatly improved when supplying with concentrated methanol.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on the Performances of a Direct Methanol Fuel Cell with a Novel Integrated Ultrasonic Atomization Fuel Feeder

Gong

et al. 2020

Fuel Cells

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With the advantages of high energy density and low operating temperature, direct methanol fuel cell (DMFC) has been rated as the most promising portable energy device to replace the traditional lithium cell. However, the development of DMFC is limited by methanol crossover (MCO) and catalyst poisoning. To alleviate MCO, a DMFC with an integrated ultrasonic atomization fuel feeder is proposed in the present research. The open circuit voltage (OCV) and the polarization curves of the cell under a series of conditions are analyzed. The performances of the proposed DMFC are evaluated at different methanol concentrations and fuel feed rates. The mechanism of MCO is discussed from above experiments.Compared with liquid feed style, atomization feed style can reduce characteristic response time (CRT) and greatly alleviate MCO because the DMFC obtains a larger OCV value. It can be found from our experiments that atomization feed style can effectively improve cell performance and energy density. Moreover, atomization feed style under different methanol concentrations can obtain the best cell performance by adjusting feed rate. When the feed rate is 0.24 mL min -1 and 0.6 mL min -1 , the best cell performance is obtained at 8M and 4M, respectively.

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Section: Introductionmentioning

confidence: 99%