Rotating Ring-Disk Study of Metal-Nitrogen-Carbon Catalyst Prepared by High Pressure Pyrolysis

摘要

Low-cost oxygen reduction catalysts composed of pyrolyzed metal/nitrogen/carbon (MNC) compounds involve the association of metal and nitrogen species integrated into a conductive carbon support. The present work considers peroxide generation: an analysis of rotating ring-disk electrode studies sheds further light on the oxygen reduction mechanism of MNC catalysts. Oxygen reduction proceeds primarily through a complete four-electron pathway to water without a desorbing intermediate.