Fe, N-doped carbon spheres prepared by electrospinning method as high efficiency oxygen reduction catalyst.

ABSTRACT: Electrocatalysts for the oxygen reduction reaction (ORR) are crucial in metal-air batteries, fuel cells and other electrochemical devices. In this study, iron and nitrogen co-doped carbon sphere electrocatalysts were synthesized by electrospinning and thermal treatment. According to the results, the catalyst marked as Fe-N/MCS-181 (Fe, N-doped mesoporous carbon spheres, iron nitrate nonahydrate as the iron source) has not only the highest iron content, which reaches up to 0.13%, but also a spherical shape. And its pore sizes are 11 and 35 nm. For the electrochemical performance, the onset potential (E _onset) of Fe-N/MCS-181 is -0.018 V, while the half-wave potential (E _1/2) of Fe-N/MCS-181 is -0.145 V, which is better than the commercial Pt/C catalyst (<

SUBMITTER: Zou H 

PROVIDER: S-EPMC9047367 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature