Sodium-Zinc molten salt batteries for low-cost stationary storage (SOLSTICE)

SOLSTICE answers the quest for stationary energy storage with two Na-Zn molten salt batteries, which operate at elevated temperature.

The first concept benefits from the existing and successful ZEBRA® technology. Replacing their Ni-electrode by cheap and abundant Zn will only minimally affect other system parts thereby ensuring fast commercialisation. 

The second approach, an all-liquid cell, will apply the same chemistry, but does not require a ceramic electrolyte thus reducing cost further. Both battery concepts shall be brought to TRL5, and validated by four demonstrators, operating in a realistic environment at the end of the 4-year project. The demonstrators will be equipped with a self-learning battery management system and will be accompanied by upscaling, system integration and public acceptance studies.