Synergistic melamine intercalation and Zn(NO₃)₂ activation of N-doped porous carbon supported Fe/Fe₃O₄ for efficient electrocatalytic oxygen reduction.

ABSTRACT: Developing inexpensive, efficient and good stability transition metal-based oxygen reduction reaction (ORR) electrocatalysts is a research topic of great concern in the commercial application of fuel cells. Herein, with zinc nitrate as activator, iron nitrate as active component and melamine as intercalating agent and nitrogen source, an N-doped porous carbon supported Fe/Fe₃O₄ (Fe/Fe₃O₄@NC) catalyst is successfully synthesized by an impregnation-calcination method combined with freeze-drying technique. The positive onset potential (E _onset), half-wave potential (E _1/2) and limiting current density (J _L) of the optimal Fe/Fe₃O₄@NC catalyst are 1.012, 0.90 V vs. RHE

SUBMITTER: Ni Y 

PROVIDER: S-EPMC9131736 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature