Vanadium pentoxide structure and powder.
Compared with li-ion batteries, iron-ion batteries offer outstanding benefits including greater capacity, more stable structure and cheaper prices due to the more abundant battery manufacturing component than lithium.
Inside the iron-ion battery does not appear dendrite, the lithium fibers are likely to cause short-term li-ion battery, despite repeated charging-discharging process. Li-ion batteries are explosive in nature, so production must be done in a strictly controlled environment. Meanwhile, with iron-ion batteries one can assemble in conventional plants.
Currently, after going through 150 charge-discharge cycles, the iron-ion battery retains a decent capacity.
Perhaps we still have a long time to go before the first smartphone that uses iron-ion batteries comes into being, but we still have to use lithium-ion batteries.