| 초록 |
Membrane-electrode assemblies employing commercially available anion-exchange membranes (NeoseptaTM, ASTOM, Japan) and non-precious catalysts (e.g., Ni, Ag) were fabricated to investigate their H2/air-performance. NeoseptaTM anion-exchange membranes (ASTOM, Japan) have different physical and electrochemical properties. Ni-based electrocatalysts and commercially available Ag/C (E-Tek, USA) were employed at anode and cathode, respectively. The catalyst slurries were prepared by mixing the catalyst powder, deionized water and the ionomer binder. PTFE-impregnated Toray 250 carbon paper (waterproof by 8% PTFE) was used and sandwiched the membranes. Fabricated MEAs were characterized and evaluated at H2/air, 50~100% RH, 60~80 oC and ambient pressure. |
