  Liquid metal electrodes are one of the key components of different electrical
energy storage technologies. The understanding of transport phenomena in liquid
electrodes is mandatory in order to ensure efficient operation. In the present
study we focus our attention on the positive electrode of the Li||Bi liquid
metal battery. Starting from a real experimental setup, we numerically
investigate the charge transfer in a molten salt electrolyte and the mass
transport in the positive electrode. The two phenomena are tightly coupled,
because the current distribution influences the concentration field in the
positive electrode. The cell is studied during charging when compositional
convection becomes apparent. First results of compositional convection from a
non-uniform current distribution are presented, highlighting its capability to
affect the flow in the positive electrode and the cell performance.
