Electric buses in Europe and China usually use LFP chemistry, because it's cheap(er) and much safer in a crash or fire because it's not prone to thermal runaway

Electric buses in Europe and China usually use LFP chemistry, because it's cheap(er) and much safer in a crash or fire because it's not prone to thermal runaway. Electric passenger trains will likely be using the same, or other stable li-ion chemistries rather than the more volatile nickel-based ones.