Abstract:For micro direct methanol fuel cell (μDMFC), water flooding on the cathode seriously affects the performance stability. Additionally, the effect of material and wettability of the cathode current collector (CCC) on the drainage capacity is studied to improve the μDMFC’s performance. To this end, a CCC with foamed stainless steel was prepared to assemble the μDMFC due to its absorbency. Further, based on analyzing the gas–liquid two-phase flow characteristics of the μDMFC cathode, it was found that the gradient… Show more
“…22 Foam metals are widely used as DMFC current collectors compared to metal ber felts due to their superior mechanical strength. 10,22 Zhao et al 12,23,24 compared hole-type foam stainless steel and hole-type stainless steel as cathode current collectors for mDMFC. It is found that the hole-type foam stainless steel cathode current collectors have a greater power density than the hole-type stainless steel current collectors.…”
Section: Introductionmentioning
confidence: 78%
“…6 shows that at the FSS-MEA structure provides higher power and limit current densities than the conventional one at 343 K and 298 K. The μDMFC power and limit current densities at 298 K decayed by almost half compared to 343 K. This is because the catalyst activity is not optimal at room temperature and the product water from the cathode blocks the oxygen transfer channel. 24,29…”
Section: Resultsmentioning
confidence: 99%
“…6 shows that at the FSS-MEA structure provides higher power and limit current densities than the conventional one at 343 K and 298 K. The mDMFC power and limit current densities at 298 K decayed by almost half compared to 343 K. This is because the catalyst activity is not optimal at room temperature and the product water from the cathode blocks the oxygen transfer channel. 24,29 It can be seen in Table 4 that the increase of maximum power density of FSS-MEA mDMFC than CCP-MEA is 74.06% at 298 K, which is higher than that at 343 K (46.14%). It indicates that The FSS-MEA mDMFC has a better drainage effect than the conventional one at room temperature.…”
Section: Mdmfc Performance At Different Temperaturesmentioning
To reduce the contact and mass transfer impedance of a micro direct methanol fuel cell, a novel membrane electrode assembly structure is designed by using slotted foam stainless steel for both the cathode diffusion layer and the current collector.
“…22 Foam metals are widely used as DMFC current collectors compared to metal ber felts due to their superior mechanical strength. 10,22 Zhao et al 12,23,24 compared hole-type foam stainless steel and hole-type stainless steel as cathode current collectors for mDMFC. It is found that the hole-type foam stainless steel cathode current collectors have a greater power density than the hole-type stainless steel current collectors.…”
Section: Introductionmentioning
confidence: 78%
“…6 shows that at the FSS-MEA structure provides higher power and limit current densities than the conventional one at 343 K and 298 K. The μDMFC power and limit current densities at 298 K decayed by almost half compared to 343 K. This is because the catalyst activity is not optimal at room temperature and the product water from the cathode blocks the oxygen transfer channel. 24,29…”
Section: Resultsmentioning
confidence: 99%
“…6 shows that at the FSS-MEA structure provides higher power and limit current densities than the conventional one at 343 K and 298 K. The mDMFC power and limit current densities at 298 K decayed by almost half compared to 343 K. This is because the catalyst activity is not optimal at room temperature and the product water from the cathode blocks the oxygen transfer channel. 24,29 It can be seen in Table 4 that the increase of maximum power density of FSS-MEA mDMFC than CCP-MEA is 74.06% at 298 K, which is higher than that at 343 K (46.14%). It indicates that The FSS-MEA mDMFC has a better drainage effect than the conventional one at room temperature.…”
Section: Mdmfc Performance At Different Temperaturesmentioning
To reduce the contact and mass transfer impedance of a micro direct methanol fuel cell, a novel membrane electrode assembly structure is designed by using slotted foam stainless steel for both the cathode diffusion layer and the current collector.
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