title: Proton Diffusion Coefficient in Electrospun Hybrid Membranes by Electrochemical Impedance Spectroscopy.
abstract: Electrochemical Impedance Spectroscopy (EIS) was, for the first time, used to estimate the global transverse proton diffusion coefficient, D(H+)(EHM), in electrospun hybrid conducting membranes (EHMs). In contrast to conventional impedance spectroscopy, EIS measurements were performed at room temperature with a liquid interface. In this configuration, the measure of the bulk proton transport is influenced by the kinetics of the transfer of proton at the solid/liquid interface. We demonstrated that the use of additives in the process of the membrane impacts the organization of the hydrophilic domains and also the proton transport. The D(H+)(EHM) is close to 1.10(-7) cm(2) s(-1) (± 0.1.10(-7) cm(2) s(-1)) for the EHMs without additive, whereas it is 4.10(-6) cm(2) s(-1) (± 0.4.10(-6) cm(2) s(-1)) for EHMs with additives.
authors: Sorbonne Université, UPMC Univ. Paris 06, UMR7574, Laboratoire de Chimie de la Matière Condensée de Paris, UPMC- UMR7574, Collège de France, 11, place Marcelin Berthelot, 75005 Paris, France.|Sorbonne Université, UPMC Univ. Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, F-75005, Paris, France.|CNRS, UMR 8235, LISE, F-75005, Paris, France.
authors: Leslie
authors: L
authors: Dos Santos
authors: Sorbonne Université, UPMC Univ. Paris 06, UMR7574, Laboratoire de Chimie de la Matière Condensée de Paris, UPMC- UMR7574, Collège de France, 11, place Marcelin Berthelot, 75005 Paris, France.
authors: Christel
authors: C
authors: Laberty-Robert
authors: Université Grenoble Alpes, CNRS/CEA-INAC-SPrAM, F-38000 Grenoble, France.
authors: Manuel
authors: M
authors: Maréchal
authors: Sorbonne Université, UPMC Univ. Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, F-75005, Paris, France.|CNRS, UMR 8235, LISE, F-75005, Paris, France.
authors: Hubert
authors: H
authors: Perrot
authors: Sorbonne Université, UPMC Univ. Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, F-75005, Paris, France.|CNRS, UMR 8235, LISE, F-75005, Paris, France.
authors: Ozlem
authors: O
authors: Sel