TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Danner, Timo
A1  - Horstmann, Birger
A1  - Wittmaier, Dennis
A1  - Wagner, Norbert
A1  - Bessler, Wolfgang G.
T1  - Reaction and transport in Ag/Ag2O gas diffusion electrodes of aqueous Li-O2 batteries: Experiments and modeling
JF  - Journal of Power Sources
N2  - Aqueous lithium–oxygen batteries are promising candidates for electric energy storage. In this paper we present and discuss a multiphase continuum model of an aqueous lithium–oxygen single cell including reactions and transport in a porous gas diffusion electrode (GDE). The model is parameterized using in-house half-cell experiments and available literature data on aqueous electrolytes. We validate our transport model with cyclic voltammetry and electrochemical impedance spectroscopy measurements over a wide range of temperatures (25, 40, 55 °C) and electrolyte concentrations (0.1–2 M). We observe very good agreement between simulations and measurements during oxygen reduction conditions. A sensitivity analysis of the validated model demonstrates the influence of the porous structure on GDE performance and gives directions for the future development of electrodes.
KW  - Lithiumbatterie
KW  - Diffusion
KW  - Gas
KW  - Elektrode
Y1  - 2014
U6  - https://doi.org/10.1016/j.jpowsour.2014.03.149
DO  - https://doi.org/10.1016/j.jpowsour.2014.03.149
VL  - 264
SP  - 320
EP  - 332
PB  - Elsevier
ER  -