Advances in Mn-Based Electrode Materials for Aqueous Sodium-Ion Batteries

Highlights Mn-based electrode materials, including oxides, Prussian blue analogues and polyanion compounds, are introduced systematically for aqueous sodium-ion batteries. The composition, crystal structure, morphology and electrochemical performance of Mn-based electrode materials are reviewed. The improvement methods of electrochemical performance, such as electrolyte optimization, element doping or substitution, morphology optimization and carbon modification, are discussed.