Influence of the carbon texture of platinum/carbon aerogel electrocatalysts on their behavior in a proton exchange membrane fuel cell cathode - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Hydrogen Energy Année : 2012

Influence of the carbon texture of platinum/carbon aerogel electrocatalysts on their behavior in a proton exchange membrane fuel cell cathode

(1) , (1) , (1) , (2) , (3) , (4) , (1)
1
2
3
4
Sandrine Berthon-Fabry
Christian Beauger
Nathalie Job
  • Fonction : Auteur
  • PersonId : 843267
Mohamed Sennour
Patrick Achard

Résumé

Seven carbon aerogels (CAs) with different pore size distributions were synthesized and used as a catalyst support in proton exchange membrane fuel cell (PEMFC) cathodes. The cathodes were tested in 50 cm 2 membrane electrode assemblies. The results demonstrate that the CA texture significantly influences performance by impacting gas diffusion and proton transport. Also, the Nafion ® loading must be adapted to the CA texture, since its easier penetration into large pores favors their obstruction and results in higher proton resistance and mass-transport voltage losses. Under fixed experimental conditions (notably Nafion ®/carbon ratio = 1), the best CA support displays high specific surface area and pore volume, a majority of mesopores with a pore size distribution peak around 25-30 nm and with some macropores. The work confirms that the carbon support structure must be controlled to reduce mass-transport voltage losses. Doing so would lead to reduce PEMFC overall cost per kW.
Fichier non déposé

Dates et versions

hal-00699512 , version 1 (21-05-2012)

Identifiants

Citer

Mathilde Ouattara-Brigaudet, Sandrine Berthon-Fabry, Christian Beauger, Marian Chatenet, Nathalie Job, et al.. Influence of the carbon texture of platinum/carbon aerogel electrocatalysts on their behavior in a proton exchange membrane fuel cell cathode. International Journal of Hydrogen Energy, 2012, 37 (12), pp.9742-9757. ⟨10.1016/j.ijhydene.2012.03.085⟩. ⟨hal-00699512⟩
198 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More