What are (Solid-State) Lithium-Metal Batteries?

The best explanatory video on regular lithium-ion batteries and solid-state lithium-ion batteries we have seen so far. The main difference is that a solid-state battery does not have an anode like regular batteries. When the lithium-ion travels through the separator, they accumulate and ‘form’ a solid lithium-metal anode, causing the batteries to ‘grow’ and ‘shrink’!