Novel Fe-N/C Type Catalysts Based on Carbide Derived Carbon for Oxygen Reduction Reaction

Novel Fe-N/C type catalysts for the oxygen reduction reaction (ORR) were synthesized using FeSO4∙7H2O as the Fe precursor, 2,2'-bipyridine as N precursor and carbide (TiC, Mo2C or SiC) derived carbons as the carbon supports. ORR activity studied by using the rotating disk electrode method incre...

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Published in:ECS transactions 2018-01, Vol.85 (13), p.1229-1238
Main Authors: Jäger, Rutha, Kasatkin, Piia Ereth, Teppor, Patrick, Härk, Eneli, Joost, Urmas, Romann, Tavo, Tallo, Indrek, Kanarbik, Rait, Paiste, Päärn, Kirsimäe, Kalle, Lust, Enn
Format: Article
Language:English
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Summary:Novel Fe-N/C type catalysts for the oxygen reduction reaction (ORR) were synthesized using FeSO4∙7H2O as the Fe precursor, 2,2'-bipyridine as N precursor and carbide (TiC, Mo2C or SiC) derived carbons as the carbon supports. ORR activity studied by using the rotating disk electrode method increases in the following order: C(SiC) < C(TiC) < C(Mo2C) < Fe-N/C(TiC) < Fe-N/C(Mo2C) < Fe-N/C(SiC). The 140-hour durability tests demonstrated that different Fe-N/C catalysts stability noticeably depends on the structure of the carbon support used. The degradation rate for Fe-N/C(Mo2C) and for Fe-N/C(SiC) is 0.9 mV h-1, but significantly smaller value (0.3 mV h-1) has been established for Fe-N/C(TiC) catalyst. Fe-N/C(SiC) showed the highest ORR activity, but the Fe-N/C(TiC) catalyst was the most stable in 0.1M HClO4 electrolyte solution.
ISSN:1938-5862
1938-6737
1938-6737
1938-5862
DOI:10.1149/08513.1229ecst