They crystallise from a melt that does not have enough iron in it to become pure lithium iron phosphate, so eventually no more of that material can form as the melt cools down.

• 球体结晶于一种含铁量不足以使其变成纯磷酸亚铁锂的熔融状态，所以最终当熔融物冷却时，就不会再生成磷酸亚铁锂。