The research group of Prof. Eichelbaum focusses on new CO2-neutral ways to produce green hydrogen, i.e., via electrolysis and photo(electro)catalysis, on the electrochemical conversion of CO2 to important chemicals and energy carriers, and on the in situ and ex situ analysis of hydrogen polymerelectrolyte (PEM) fuel cells in real applications. Understanding degradation mechanisms and the extension of fuel cell lifetimes is a key topic across all of their work. The degradation of fuel cells is investigated by newly developed accelerated stress tests (AST) and the components are characterised by various analytical methods such as cyclovoltammetry (CV), eletrochemical impedance spectroscopy (EIS), X-ray fluorescence microscopy (XRF), mass spectrometric (MS) gas analysis, product water analysis by voltammetry and inductively-coupled plasma optical emission spectroscopy (ICP-OES), and surface conductivity analysis by scanning electrochemical microscopy (SECM). The results are compared with fuel cells degraded on engine test benches and in truck field tests, and the laboratory ASTs are adapted to reflect more realistic degradation conditions. In the long run, regeneration methods are developed to increase the lifetime of fuel cells. For this purpose, machine learning methods are applied to predict fuel cell degradation and to develop virtual sensors.

Maik Eichelbaum Maik Eichelbaum
Prof. Dr. rer. nat.
Sandra Fillinger Sandra Fillinger
Susanne Thiel Susanne Thiel
M.Sc.
Lisa Machard Lisa Machard
M.Sc.
Lena Birkner Lena Birkner
M.Sc.
Given name Family name Topic
Lena Birkner Reversible and irreversible catalyst degradation in hydrogen/air PEM fuel cells with operando isopotential FTIR spectroscopy
Lisa Machard Corrosion and degradation processes in base metal alloy anion exchange membrane water and CO2 electrolysers
Susanne Thiel Degradation of poylmer-electrolyte membrane fuel cells; characterisation of fuel cell components