ELECTROCATALYSTS FOR OXYGEN REDUCTION REACTION AND METHODS OF MAKING AND USE THEREOF

Nitrogen-doped carbon-based catalyst sheets, methods for producing such carbon-based catalyst sheets, and their use as electrocatalysts in oxygen reduction reaction (ORR). A carbon-based catalyst comprising:carbon-based sheets, wherein the carbon-based sheets comprise nitrogen and a transition metal, and wherein the carbon-based sheets further comprise a plurality of micropores, mesopores, macropores, or combinations thereof.