Compositional Doping and Structure Insights for High-Performance Aqueous Zn-Ion Batteries

Abstract

Mn-based materials are considered as promising cathodes candidates for aqueous Zn-ion batteries (AZIBs). Herein, Mg2+ incorporation is developed to stabilize MnO, which can promote the reaction kinetics and improve the electrochemical performance. In addition, Mg-doped MnO exhibits 80.7 mAh g-1 reversible capacity after 2000 cycles even at high rate of 2 A g-1.