Correlations between the catalytic layer composition, the relative humidity and the performance for PEMFC carbon aerogel based membrane electrode assemblies - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Hydrogen Energy Année : 2014

Correlations between the catalytic layer composition, the relative humidity and the performance for PEMFC carbon aerogel based membrane electrode assemblies

(1) , (1) , (1) , (1)
1

Résumé

The parameters influencing the water management or the gas diffusion have a large impact on the performances of the PEMFC. In this work, we focused on the influence of the composition of the cathode catalytic layer on the performance of the MEA in relation to the relative humidity. A carbon aerogel was synthesized as catalyst support with a texture minimizing diffusive losses. We studied the influence of the Nafion content by preparing various cathode catalytic layers whose hydric properties were modified by adding PTFE as a hydrophobic agent. We evaluated the impact of the cathodic relative humidity by testing MEAs on a single cell test bench. We showed that modifying the composition of the catalytic layers playing on the content of both Nafion and PTFE, enables to improve the performance due to a better water management. The best performance was obtained with a Nafion/Carbon mass ratio (N/C) of 0.5 and a PTFE/Carbon (PTFE/C) mass ratio of 0.35 allowing 40% more power at 0.4 V and 75%RH. A first positive evaluation of the impact of PTFE is also done with TEC10E40E.
Fichier non déposé

Dates et versions

hal-00918905 , version 1 (16-12-2013)

Identifiants

Citer

Mathilde Ouattara-Brigaudet, Sandrine Berthon-Fabry, Christian Beauger, Patrick Achard. Correlations between the catalytic layer composition, the relative humidity and the performance for PEMFC carbon aerogel based membrane electrode assemblies. International Journal of Hydrogen Energy, 2014, 39 (3), pp.1420-1429. ⟨10.1016/j.ijhydene.2013.09.107⟩. ⟨hal-00918905⟩
98 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More