My understanding is that the only way of controlling a lithium-ion battery fire is by dousing with water. Lots of water, for as long as it takes.
This will only extinguish the fire once the material has cooled sufficiently for the internal reaction to cease propagating. The video I've seen of this in action indicates that the water doesn't actually react with the lithium.
Probably just as well. Lithium, magnesium, sodium etc react spectacularly with water. It was demonstrated to us when I trained to be a firefighter. Good fun.