The effect of membrane thickness on AEMFC Performance: An integrated theoretical and experimental study

Highly active ZIF-8@CNT composite catalysts as cathode materials for anion exchange membrane fuel cells

“…81 Also, the thickness of the AEM plays a crucial role in the efficient migration of OH − ions and H 2 O molecules. 82 Wei et al demonstrated that the higher thickness of the Aemion+ AEM (25 μm) exhibits lower AEMFC performance by achieving 23.5% lower P max in comparison to 10 μm Aemion AEM. 83 A thinner AEM provides better water back-diffusion from the membrane, resulting in more favourable water management.…”

Quantifying the Resistive Losses of the Catalytic Layers in Anion‐Exchange Membrane Fuel Cells

“…The AEMFC (materials, fabrication [41][42][43][44][45][46][47][48][49][50] and testing details are found in the experimental section below) was first tested at a temperature of 80 °C under hydrogen and oxygen gases at 1 slpm with equal humidification (relative humidity of 88 %) and back-pressure (BP of 100 kPa) on both electrodes, to reduce mass transfer related losses and extend the ohmic region profile (Figure 1). At stable operating conditions, the optimized results yielded a limiting current upwards of 9 A (current density of 4.25 A cm À 2 ) and a peak power density of ca.…”

“…AEMFCs were made via the gas diffusion electrode method using the materials mentioned herein and following the general procedures we previously reported elsewhere. [41][42][43][44][45][46][47][48][49][50] In brief, for the anode, 12 mg of PtRu/C catalyst was combined with 5 mg of AEI, and 6 mg of Vulcan XC 72 carbon and ground with a mortar and pestle. Carbon was added to increase the pore volume and avoid flooding.…”

Understanding the effects of operating conditions on the water management in anion exchange membrane fuel cells

“…Several works have shown that AEMFC performance is tightly connected to the water management, an optimized water balance often requiring the combined use of high flow rates and high inlet RH [12,15,19]. Since back diffusion of water from anode to cathode is an important mechanism to mitigate anode flooding and cathode drying, developing AEMs that are thin and with good water diffusion properties have also been identified as key aspects for achieving high power performance [10,11,20] . Although water management has been identified as a key concern, quantification of water transport remains relatively unstudied with only a few previous studies having measured how water is distributed in a single-cell AEMFC [19,[21][22][23][24][25][26][27] .…”