Carbon nanotubes-gold nanohybrid as potent electrocatalyst for oxygen reduction in alkaline media

Adina Morozan (1) , Simon Donck (2, 3) , Artero Vincent (1) , Edmond Gravel (2, 3) , Eric Doris (2, 3)

1 LCBM - UMR 5249 - Laboratoire de Chimie et Biologie des Métaux
2 IBITECS - Institut de Biologie et de Technologies de Saclay
3 SCBM - Service de Chimie Bio-Organique et de Marquage

A carbon nanotube-gold nanohybrid was used as catalyst for the reduction of molecular oxygen in acidic and alkaline media, the relevant cathode reaction in fuel cells. In alkaline medium, the nanohybrid exhibits excellent activity with a dominant 4e− reduction of O2 and low overpotential requirement compared to previously reported nano-gold materials. This property is linked to its capability to efficiently mediate HO2− dismutation.

Domaines: Catalyse; Matériaux

Adina Morozan, Simon Donck, Artero Vincent, Edmond Gravel, Eric Doris. Carbon nanotubes-gold nanohybrid as potent electrocatalyst for oxygen reduction in alkaline media. Nanoscale, 2015, 7 (41), pp.17274-17277. ⟨10.1039/C5NR04576B⟩. ⟨hal-01220528⟩