Liquid Metal Batteries
Ambri Liquid Metal Batteries
Ambri have developed batteries made of 3 immiscible layers. Two of molten metal, and one of molten salt. The temperature is kept high by the energy wasted in charging and discharging.
At first they used magnesium Mg, and antimony Sb as the negative and positive electrodes, respectively, and a low cost molten salt electrolyte. Since then, Ambri has transitioned to using higher voltage and lower cost chemistries.
A container sized battery would store 2 MWh.
Battery can operate at high temperature that come with power surges.
The invention was based on the manufacture of aluminium.