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

Abstract

N-doped 2D porous carbon supported Fe/Fe3O4 composite is fabricated by melamine intercalation and zinc nitrate as activator. The synergistic effect makes the catalyst shows excellent ORR activity and decent durability compared with commercial Pt/C.

Waste iron-based disposable chemical warmer derived electrocatalyst for water splitting

“…Previous research has demonstrated that the presence of pyrrolic N and graphitic N can enhance kinetic performance by increasing conductivity, while both pyridinic N and Fe-N x coordination species have been identified as potential active sites for the reaction. 36,37 38,39 In Fig. 3d, the O 1s high-resolution XPS spectrum revealed distinct peaks corresponding to different chemical species.…”

“…3c shows the deconvolution of the C 1s carbon spectra into four peak fittings: 284.5 eV (C–C), 285.0 eV (C–N), 286.4 eV (C–O), and 290.2 eV (O–CO). 38,39 In Fig. 3d, the O 1s high-resolution XPS spectrum revealed distinct peaks corresponding to different chemical species.…”

Mitigating Co Metal Particle Agglomeration and Enhancing ORR Catalytic Activity through Nitrogen-Enriched Porous Carbon Derived from Biomass

“…However, the oxygen reduction reaction (ORR), a critical process occurring in the electrode materials in fuel cells and metal-air batteries, presents inherent obstacles, including sluggish kinetics and high overpotential, leading to reduced overall efficiency [4,5]. Although Pt-based catalysts have been regarded as the most efficient ORR electrocatalysts, their high cost and poor stability pose significant challenges for widespread implementation [6]. Thus, there is an urgent need to develop inexpensive, efficient, and stable non-platinum-based ORR catalysts.…”