Modelling the Hydrogen evolution during water electrolysis


Modelling the Hydrogen evolution during water electrolysis

Mutschke, G.; Arndt, F.; Gerke, S.; Yang, X.; Fröhlich, J.; Eckert, K.

Hydrogen produced from wind or solar power can be used easily for storing energy, also at large scale, thus allowing to bridge the gap between offer and demand of green energy with respect to time and place. When splitting water by electrolysis, a deeper look at local phenomena near single bubbles at the electrode might be helpful to improve our understanding of the process. The presentation will first introduce a numerical model based on a phase field method to simulate growth and departure of gas bubbles from the electrode. The modelling is supported by detailed data of recent experiments on hydrogen single bubbles evolving at a platinum electrode. The numerical method is then validated by test cases. Work is still in progress at the time of writing this abstract. The simulation results will provide first insight into the local and temporal behaviour of species concentrations, current density and electrolyte velocity during growth and departure of a hydrogen bubble from the electrode.

Keywords: Water electrolysis; hydrogen evolution; bubble growth and departure; phase-field method; numerical simulation

  • Lecture (Conference)
    85th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 10.-14.03.2014, Erlangen, Deutschland

Permalink: https://www.hzdr.de/publications/Publ-20415
Publ.-Id: 20415