Yet another emerging battery technology of the week. Sooner or later one of them will work.
There is a reason Lithium Ion, with a dash of Cobalt, have lasted this long. They're not poisonous, have relatively low environmental impact. Have the best balance of: Power, Charge Cycles and Energy Density (watts to volume). Established manufacturing processes. Even Lithium recycling is taking huge steps. Someone accidentally discovered that the Lithium will dissolve in water (without reacting) at very specific state of (dis)charge. It can then be removed from the water and reused.
For most other battery cells you have to pick any 2 out of 3, and build new factories to start making them. With Lithium Ion "this good" the new technology would have to be a big step forward to justify the capital investment.
Even A123 batteries (who actually made it to the market) didn't last long. Good power and high number of charge cycles. Energy density too low (too big and heavy once you'd gotten the required capacity). If Tesla had A123 batteries it would be about third heavier for the same range and more cramped inside.
I believe solid state batteries will come on the market next. The Achilles heel of them is that energy is stored as matter. E=MC2. Solid state can only have so much matter added/removed before it breaks apart.