On the Performance of Proton Exchange Membrane Fuel Cells with a Catalyst Layer Fabricated Using an Inorganic Dispersant with Various Ultrasonic Mixing

[Image: see text] This study utilizes both an inorganic dispersant, montmorillonite, and an organic dispersant (AS-1164) with 1.6 and 3.2 mg(Pt)/cm(2) platinum coatings that underwent various frequencies of ultrasonic mixing (40, 80, and 120 kHz) to fabricate proton exchange membrane fuel cells (PEMFCs). The performance of these PEMFCs was then compared. At room temperature and a hydrogen gas flow rate of 15 sccm. After undergoing 3 h of vibration at 120 kHz, the 1.6 mg(Pt)/cm(2) platinum-coated organic sample has a power density of 3.69 mW/cm(2), while its inorganic counterpart has an impressive power density of 4.49 mW/cm(2). In addition, using the 1.6 mg(Pt)/cm(2) platinum-coated inorganic dispersants that underwent vibration at 40 kHz, its resulting power density is only 0.95 mW/cm(2). This result shows that the distribution of platinum coating is more even under high-frequency vibrations than low-frequency ones.