Effects of the microstructure and powder compositions of a micro-porous layer for the anode on the performance of high concentration methanol fuel cell

The effects of the composition of microporous layers on the permeability of gas diffusion layers used in polymer electrolyte fuel cells

“…The MPL-coated GDLs were then heat-treated to a temperature 120 for 1 hour, at 280 for 30 minutes and finally sintered at 350 for 30 minutes using nitrogen gas to uniformly distribute the PTFE particles throughout the MPL [8,[13][14]. The thickness of the GDL samples was measured both before and after the MPL-coating using a micrometre.…”

“…The areas of research in this regard are typically on the effects of the loading of the wet-proofing agent [13][14][15][16][17], and the type of carbon black [16,18]. Ismail et al [19] found that the through-plane permeability of the GDL increases as the PTFE loading in the MPL increases from 25 to 50 %.…”

Effect of electrode variable contact angle on the performance and transport characteristics of passive direct methanol fuel cells

“…Similarly, other experimental studies [41,42] also confirmed that anode MPL could reduce the methanol concentration in ACL, and thereby highly concentrated feed methanol might be used to increase the energy density. Kim et al [43] studied the effects of microstructure and powder compositions of anode MPL on the performance of a DMFC using a highly concentrated methanol solution. On the other hand, the experiment carried out by Xu et al [44] and Park et al [45] found that with cathode MPL, more liquid water could accumulate in CCL, increasing the cathode liquid pressure and pushing more liquid moving from cathode to anode, correspondingly, the methanol crossover might also be decreased.…”

Methanol-Tolerant Platinum-Palladium Catalyst Supported on Nitrogen-Doped Carbon Nanofiber for High Concentration Direct Methanol Fuel Cells

“…It is necessary to develop a highly active catalyst, a low methanol-permeable membrane and a methanol-tolerant oxygen reduction reaction (ORR) catalyst. The novel design of the electrode structure, electrode materials and membrane-electrode-assembly (MEA) fabrication technique are also required to achieve it [12,13,14]. …”