Dr. rer. nat.

Andreas Falkenstein

Andreas Falkenstein
Lehrstuhl für Physikalische Chemie I und Institut für Physikalische Chemie


Building: 2400

Room: 126

Landoltweg 2

52074 Aachen


Phone: +49 241 80 94757
Fax: +49 241 80 92128

Research Interest:

Transport kinetics of proton and oxygen conduction in ceramics

Hydrogen permeation in ceramic materials is of interest in several technical applications, e.g. gas separation membranes and as cathode materials in SOFCs/SOECs. Currently, lanthanum tungstate "La5.4WO11.1- d" shows one of the largest proton permeation rates along with high chemical and mechanical stability. Its transport kinetics are experimentally investigated by relaxation techniques, mainly the electrical conductivity relaxation, ECR, method.


Chemical relaxation experiments on mixed conducting oxides with large stoichiometry deviations, A. Falkenstein, D.N. Mueller*, R.A. De Souza, M. Martin, "Solid State Ionics" 2015, 280, 66-73, DOI: 10.1016/j.ssi.2015.07.023.

Conference contributions:

Transport kinetics of the mixed conductor lanthanum tungstate, A. Falkenstein, M. Martin, 2015, "20th International Conference on Solid State Ionics, Keystone", USA, Poster presentation.

ECR on oxides with large nonstoichiometry deviations, A. Falkenstein, D.N. Mueller, R.A. De Souza, M. Martin, 2013, "Inorganic Membranes Summer School, Valencia, Spain", Poster presentation.


Übung zur Vorlesung Physikalische Chemie I für Lehramt im WS2012/13, WS2013/14, WS2014/15

Übung zur Vorlesung Physikalische Chemie II für Lehramt im SS2013, SS2014, SS2015

Practical Course: Electrical Conductivity Relaxation, PC II, WS2015/16