Transition metal-containing nitrogen-doped nanocarbon catalysts derived from 5-methylresorcinol for anion exchange membrane fuel cell application
| Autor: | Päärn Paiste, Alexey Treshchalov, Jaan Aruväli, Mihkel Rähn, Maike Käärik, Maido Merisalu, Väino Sammelselg, Steven Holdcroft, Arvo Kikas, Jaan Leis, Kaarel Kisand, Kaido Tammeveski, Vambola Kisand, Dmytro Danilian, Ave Sarapuu |
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| Rok vydání: | 2020 |
| Předmět: |
Ion exchange
Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst Electrochemistry 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Biomaterials Colloid and Surface Chemistry Membrane Transition metal chemistry 0210 nano-technology Bimetallic strip Cobalt |
| Zdroj: | Journal of colloid and interface science. 584 |
| ISSN: | 1095-7103 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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