Anyone know anything about niobium batteries?

[erik.calco]

It's a very fascinating metal that has been gaining interest for its physical properties, such as the ability to change colors with electric current. But, this is the first I've heard of it being used to create a new rechargable battery.

VW develops electric vehicle with niobium battery in Brazil
https://playcrazygame.com/2021/09/17/vw-develops-electric-vehicle-with-niobium-battery-in-brazil/​

For the first time we are implementing this solution, which, due to the use of Niobium oxide in the battery anode, will allow an ultra-fast charging operation, in less than 10 minutes, greater durability, useful life and safety.