A battery of molten metals

Low-cost, long-lasting storage for the grid

http://mitei.mit.edu/news/battery-molten-metals?utm_source=MIT+Energy+Initiative&utm_campaign=5fec6b8f10-Energy_Futures_Spring_20156_10_2015&utm_medium=email&utm_term=0_eb3c6d9c51-5fec6b8f10-70117141