Polymer electrolyte membrane fuel cells PEM-FC

On the other hand, the largest disadvantage is that the protonic resistance of the Sr-Ce-Yb oxide was comparatively larger than that of a polymer-electrolyte-membrane fuel cell (PEM-FC) and was comparable with 0 ion conductivity of an yttria-stabilised zirconia (YSZ). Consequently, as seen in Figs. 4 and 5, the current density through the Sr-Ce-Yb oxide fuel cell was order of niA/cni and was much smaller than that of PEM-FC. This is because a thin ceramic is very difficult to manufacture. The protonic conductivity of the Sr-Ce-Yb oxide itself was around one-tenth smaller than that of PEM. Moreover, the conductivity was order of 10 " S/cm when a CH4 and HjO mixture was supplied directly to the cell without external reformer. The overall conductivity became around 10 -fold less than that of PEM, because the rate-controlling step was in the steam-reforming reaction. 

Polymer electrolyte membrane fuel cells (PEM-FCs) have been recognized as a promising alternative power-source for various applications due to their zero... 

Kramm UI, Bogdanoff P, Fiechter S (2013) Non-noble metal catalysts for the oxygen reduction in polymer electrolyte membrane fuel cells (PEM-FC). In Encyclopedia of sustainable science and technology. Springer, New York, pp. 8265-8307... 

Polymer Electrolyte Membrane Fuel Cells (PEM-FC) and Non-noble Metal Catalysts for Oxygen Reduction... 

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