| 초록 |
Titanium oxide, forming on surface of the Ti-PTL during the operation, is contributed to high Ohmic resistance of the cell. Covering a thin layer of high corrosion-resistive metal on PTL surface is typical method to prevent this phenomena. Iridium and its compound are usually used in PEMWE due to the low electrical resistivity and high stability under harsh condition. In this study, combining spray-coating and calcination method, IrO2 was deposited on the commercial Ti-PTL surface to limit passivation. 3 samples with different catalyst loading (0.08 mg/cm2, 0.17 mg/cm2, 0.28 mg/cm2) were investigated to access the effect of catalyst loading on the water electrolysis cell performance. The polarization curve results showed that the high catalyst loading (0.28 mg/cm2) and low loading (0.08 mg/cm2) show lower performance than the loading of 0.17 mg/cm2 with about 40mV at 2 A/cm2, despite of the Ohmic resistance increase with the increasing of catalyst loading |
