Wireless electrochemistry, an electro-synthesis of metal organic framework aided by a bipolar electrochemistry, creates an electrode-template with a good control over the pore size that is accessible for functionalization with an electro-active p...
Artikel
Optimal pore shape in a low‐Pt PEM fuel cell cathode catalyst layer
Electrochemical Science Advances, März 2024, DOI. Login für Volltextzugriff.
Von Wiley-VCH zur Verfügung gestellt
Abstract
A model for performance of an axially symmetric pore with the curved generatrix is developed. Oxygen transport along the pore axis and in the radial direction through a thin ionomer film separating the pore volume from the Pt/C surface is taken into account. A performance functional is formulated, and the Euler–Lagrange equation is solved numerically for an optimal pore shape. This shape is close to a cubic paraboloid converging toward the membrane. Polarization curves show superior performance of the optimal pore over the cylindrical pore of the same active (side) surface area. The results suggest the shape of optimal ionomer loading for low-Pt electrodes.
Zum VolltextJetzt nächsten Artikel lesen:
Überprüfung Ihres Anmeldestatus ...
Wenn Sie ein registrierter Benutzer sind, zeigen wir in Kürze den vollständigen Artikel.