For the preparation of Pb+PbF2 anode composite, 45 wt-% of elemental lead (Sigma-Aldrich, ≥99%), 45 wt-% of PbF2 (STREM chemicals, 99 %) and 10 wt-% of dried black carbon was milled at 600 rpm for 12 hrs. The anode system was chosen taking into account previously reported findings, which show this system to possess good kinetics of the conversion process due to the high ionic conductivity of PbF2 and its low melting point . This allows good referencing of novel materials with low overpotentials induced from the anode itself.