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Indexed by:会议论文

Date of Publication:2006-01-18

Included Journals:EI、CPCI-S、Scopus

Page Number:1374-+

Key Words:CO2 bubble; clogging; mu DMFC; flow field

Abstract:The CO2 bubbles clogging in anode flow field is a vital problem in development of liquid feed micro direct methanol fuel cells (mu DNTC). In order to study the CO2 bubbles clogging behavior, an air-breathing transparent mu DMFC with 180 mu m wide serpentine channels in anode was fabricated. In situ visual investigation of the bubbles behavior in anode flow field was implemented on the microfluidics test station. The mu DMFC was evaluated under different operating conditions by changing the fuel temperature, concentration and feeding rate. Gradient distribution of the bubbles in micro How field had been observed, measured and quantitatively analyzed. Results show that the clogging behavior of the bubbles is mainly affected by the current density and feeding rate of the fuel in mu DMFC. Meanwhile, the influences of fuel concentration and fuel temperature on bubbles clogging mainly take effect via their impacts on the mu DMFC current density.