A quantitative analysis of two-fold electrical conductivity relaxation behaviour in mixed proton–oxide-ion–electron conductors upon hydration

Physical Chemistry Chemical Physics, vol. 22, pp. 25032–25041

Abstract

, LaWO54) was investigated experimentally over the temperature range 923 ≤T/K ≤ 1223. A switch from two-fold non-monotonic relaxation behaviour at high temperatures to two-fold monotonic behaviour at low temperatures upon hydration was observed. The switch in sign of the fast kinetics' amplitude factor can be assigned to the electrochemical mobility of protons surpassing the electron-hole mobility with decreasing temperature.

Authors 4

1. Andreas Falkenstein corresponding Aachen Institute of Physical Chemistry

   RWTH Aachen University · Jülich Aachen Research Alliance

   Affiliation as printed

   Aachen

   Germany

   Institute of Physical Chemistry

   JARA-Energy

   RWTH Aachen University

   JARA-Energy, Germany

   RWTH Aachen University, Institute of Physical Chemistry, Landoltweg 2, Aachen, Germany

2. Roger A. De Souza Aachen Institute of Physical Chemistry

   RWTH Aachen University · Jülich Aachen Research Alliance

   Affiliation as printed

   Aachen

   Germany

   Institute of Physical Chemistry

   JARA-Energy

   RWTH Aachen University

   JARA-Energy, Germany

   RWTH Aachen University, Institute of Physical Chemistry, Landoltweg 2, Aachen, Germany

3. Wilhelm Albert Meulenberg

   Forschungszentrum Jülich · Jülich Aachen Research Alliance · University of Twente · Institute for Ecological Economy Research

   Affiliation as printed

   Forschungszentrum Jülich GmbH

   Germany

   Institut für Energie- und Klimaforschung IEK-1

   JARA-Energy

   Werkstoffsynthese und Herstellungsverfahren

   JARA-Energy, Germany

   University of Twente, Faculty of Science and Technology, P.O. Box 217, Enschede, The Netherlands

4. Manfred Martin Aachen Institute of Physical Chemistry

   RWTH Aachen University · Jülich Aachen Research Alliance

   Affiliation as printed

   Aachen

   Germany

   Institute of Physical Chemistry

   JARA-Energy

   RWTH Aachen University

   JARA-Energy, Germany

   RWTH Aachen University, Institute of Physical Chemistry, Landoltweg 2, Aachen, Germany