Résumé
The development of new electrocatalysts for the oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) at physiological pH is critical for several fields, including fuel cells and biological applications. Herein, the assembly of an electrode based on carboxyl-functionalised hydrophilic multiwalled carbon nanotubes (MWCNTs) filled with Fe phases and their excellent performance as electrocatalysts for ORR and HER at physiological pH are reported. The encapsulated Fe dramatically enhances the catalytic activity, and the graphitic shells play a double role of efficiently mediating the electron transfer to O<inf>2</inf> and H<inf>2</inf>O reactants and providing a cocoon that prevents uncontrolled Fe oxidation or leaching.
langue originale | Anglais |
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Pages (de - à) | 12769-12777 |
Nombre de pages | 9 |
journal | Chemistry: A European Journal |
Volume | 21 |
Numéro de publication | 36 |
Les DOIs | |
Etat de la publication | Publié - 1 sept. 2015 |
Empreinte digitale
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Physico-chimie et caractérisation (PC2)
Johan Wouters (!!Manager) & Carmela Aprile (!!Manager)
Plateforme technologique Caracterisation physico-chimiquesEquipement/installations: Plateforme technolgique