Synthesis of hierarchically structured Fe₃C/CNTs composites in a FeNC matrix for use as efficient ORR electrocatalysts.

ABSTRACT: Fe-N-C has a high number of FeN _x active sites and has thus been regarded as a high-performance oxygen reduction reaction (ORR) catalyst, and combining Fe₃C with Fe-N-C typically boosts ORR activity. However, the catalytic mechanism remains unknown, limiting further research and development. In this study, a precipitation-solvothermal process was used in conjunction with pyrolysis to produce a series of Fe-N-C catalysts derived from a zeolitic imidazolate framework (ZIF) that was composited with Fe₃C. The prepared catalysts had a multiscale structure of ZIF-like carbon particles and rod-like structures, as well as bamboo-like carbon nanotubes (CNTs) and carbon layers wrapped with Fe₃C particles while a series of studies revealed the origin

SUBMITTER: Wang T 

PROVIDER: S-EPMC9890648 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature