Facile preparation of high-performance Mn and Mg co-doped Fe2O3 nanorod for lithium-ion battery anode from refined green alum slag-a “turn waste into treasure” strategy

Herein, value-added Fe 2 O 3 was recovered from green alum slag, a by-product of TiO 2 production in the industry. It worked well in LIBs as anode, showed a stable specific capacity of 1209 mA h g −1 at 500 mA g −1 .