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Pyrolyzed carbon‐supported Co‐N 4 electrocatalysts using hexamethylene‐tetramine as nitrogen source

Feng Li, Gary Pattrick, Richard M. Moutloali, Elma van der Lingen

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Abstract

Abstract Hexamethylenetetramine was used as nitrogen resource to prepare platinum‐free Fe‐N and Co‐N electrocatalyst for oxygen reduction reaction (ORR). X‐ray diffraction measurement shows that trace Co ions are reduced to Co metal. Cyclic voltammogram experiment shows that the ORR peak potential appears at 200 mV (vs. SCE) in oxygen‐saturated acidic media. The Koutecky‐Levich analysis indicates that the ORR follows the first‐order kinetic reaction and the ORR proceeds mainly via the four‐electron reduction.

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What this paper is about

Abstract Hexamethylenetetramine was used as nitrogen resource to prepare platinum‐free Fe‐N and Co‐N electrocatalyst for oxygen reduction reaction (ORR). X‐ray diffraction measurement shows that trace Co ions are reduced to Co metal. Cyclic voltammogram experiment shows that the ORR peak potential appears at 200 mV (vs. SCE) in oxygen‐saturated acidic media. The Koutecky‐Levich analysis indicates that the ORR follows the first‐order kinetic reaction and the ORR proceeds mainly via the four‐electron reduction.

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Available abstract

Abstract Hexamethylenetetramine was used as nitrogen resource to prepare platinum‐free Fe‐N and Co‐N electrocatalyst for oxygen reduction reaction (ORR). X‐ray diffraction measurement shows that trace Co ions are reduced to Co metal. Cyclic voltammogram experiment shows that the ORR peak potential appears at 200 mV (vs. SCE) in oxygen‐saturated acidic media. The Koutecky‐Levich analysis indicates that the ORR follows the first‐order kinetic reaction and the ORR proceeds mainly via the four‐electron reduction.

Key concepts: Hexamethylenetetramine, Tetramine, Electrocatalyst, Oxygen reduction reaction, Pyrolysis, Materials science, Nitrogen, Inorganic chemistry

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