Zinc‐Ion Batteries: Valence Engineering Via in Situ Carbon Reduction on Octahedron Sites Mn3O4 for Ultra‐Long Cycle Life Aqueous Zn‐Ion Battery (adv. Energy Mater. 38/2020)

In article number 2001050, Houzhao Wan, Ling Miao, Yi Wang, Hao Wang and co-workers present the valence engineering of manganese oxide through bulk oxygen defects. The resulting material can act as a cathode material for aqueous zinc-ion batteries. Valence engineering can change the [MnO6] octahedral configuration of manganese oxide to improve structural stability and inhibit the dissolution of Mn2+, thereby greatly improving the cycle life of the battery.