Abstract
Structural engineering emerges as a pivotal approach in crafting cost-effective and highly efficient catalysts for oxygen reduction reaction (ORR), emphasizing large surface areas, abundant reactive sites, and enhanced porosity. The incorporation of trace non-precious metals can significantly boost ORR performance through structural refinement. Here, we report on the synthesis of bimetallic FeCo nanoparticles embedded within a heteroatoms-doped carbon framework utilizing eco-friendly chitosan. This configuration yields a catalyst with marked activity for ORR in alkaline conditions, attributable to synergistic effects among Fe, Co, N, and O dopants. Comparative analysis reveals the superior performance of the FeCo-NC variant, characterized by a higher degree of defects and disorders. The standout FeCo-NC800W sample, with its 347.616 m2/g surface area and pyrolysis-induced graphene coating exhibits optimal ORR activity, closely adhering to a four-electron transfer pathway. Moreover, this catalyst demonstrates remarkable longevity and methanol resistance in ORR applications. FeCo-NC800W surpasses the conventional 20% Pt/C + RuO2 cathode in peak power density in a zinc-air battery setup, highlighting its potential as a high-performance, sustainable electrocatalyst.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
