Niobium prices could be high in comparison with those other materials, he acknowledged, but added that it could be used alone – unlike zirconium, for example, which must be applied in tandem with boron or tantalum.
Ribas said that in future niobium could also be used in the battery electrolyte, but only in solid-state units.
Brazil’s CBMM expects niobium for batteries to make 25% of revenues by 2030
https://www.fastmarkets.com/insights/brazils-cbmm-niobium-batteries-2030/
