Optimization of polyelectrolyte-based membrane-electrode assemblies for fuel cells

摘要

Dependence of the specific power of a hydrogen fuel cell (FC) on various factors involved in the fabrication of membrane-electrode assemblies (MEAs) based on polyelectrolyte membranes has been studied. The MEA technology has been optimized with respect to the following parameters determining the FC structure and characteristics: weight fractions of the Pt/C catalyst powder and carbon nanotubes (CNTs), content of polymer solution, and polymer type (Nafion 212, MF4-SK). MEAs with specific powers above 210 mW/cm(2) are obtained for air-hydrogen FCs operating at room temperature and nearly atmospheric hydrogen pressure.