[1] CNRS, FR 3539, FCLAB Fuel Cell Lab Res Federat, Rue Thierry Mieg, F-90010 Belfort, France
[2] UFC UTBM ENSMM, Dept Energy, CNRS, FEMTO ST,UMR 6174, Paris, France
[3] Univ Aix Marseille, LSIS, Marseille, France
[4] CEA, LIST, F-91191 Gif Sur Yvette, France
[5] CEA Grenoble, LITEN, F-38054 Grenoble, France