期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 36, 页码 12769-12777出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201501144
关键词
electrochemistry; iron; hydrogen evolution reaction; nanotubes; oxygen reduction reaction
资金
- Seventh Framework Programme [310651]
- ICTP TRIL Programme, Trieste, Italy
- FRS-FNRS (FRFC) [2.4.550.09]
- Belgian Government (IAP-PAI P7 network Functional Supramolecular Systems)
- MIUR through the FIRB Futuro in Ricerca SUPRACARBON [RBFR10DAK6]
- CONICET
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-2 and H2O reactants and providing a cocoon that prevents uncontrolled Fe oxidation or leaching.
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