Transition metal-containing nitrogen-doped nanocarbon catalysts derived from 5-methylresorcinol for anion exchange membrane fuel cell application

Transition metal-containing nitrogen-doped nanocarbon catalysts derived from 5-methylresorcinol for anion exchange membrane fuel cell application

[Display omitted] Highly active electrocatalysts for electrochemical oxygen reduction reaction (ORR) were prepared by high-temperature pyrolysis from 5-methylresorcinol, Co and/or Fe salts and dicyandiamide, which acts simultaneously as a precursor for reactive carbonitride template and a nitrogen s...

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Bibliographic Details
Published in:Journal of colloid and interface science 2021-02, Vol.584, p.263-274
Main Authors: Kisand, Kaarel, Sarapuu, Ave, Danilian, Dmytro, Kikas, Arvo, Kisand, Vambola, Rähn, Mihkel, Treshchalov, Alexey, Käärik, Maike, Merisalu, Maido, Paiste, Päärn, Aruväli, Jaan, Leis, Jaan, Sammelselg, Väino, Holdcroft, Steven, Tammeveski, Kaido
Format: Article
Language:eng
Subjects:
Alkaline membrane fuel cell
Carbonitride template
Electrocatalysis
MNC catalysts
Non-precious metal catalysts
Oxygen reduction
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Summary:[Display omitted] Highly active electrocatalysts for electrochemical oxygen reduction reaction (ORR) were prepared by high-temperature pyrolysis from 5-methylresorcinol, Co and/or Fe salts and dicyandiamide, which acts simultaneously as a precursor for reactive carbonitride template and a nitrogen source. The electrocatalytic activity of the catalysts for ORR in alkaline solution was studied using the rotating disc electrode (RDE) method. The bimetallic catalyst containing iron and cobalt (FeCoNC-at) showed excellent stability and remarkable ORR performance, comparable to that of commercial Pt/C (20 wt%). The superior activity was attributed to high surface metal and nitrogen contents. The FeCoNC-at catalyst was further tested in anion exchange membrane fuel cell (AEMFC) with poly-(hexamethyl-p-terphenylbenzimidazolium) (HMT-PMBI) membrane, where a high value of peak power density (Pmax = 415 mW cm−2) was achieved.
ISSN:0021-9797
1095-7103