Dual Anions Doping Enhanced Conductivity and Stability of Layered δ ‐MnO 2 Cathode for Aqueous Zinc‐Ion Battery

Abstract Manganese‐based oxides have been identified as promising cathodes for aqueous zinc‐ion batteries (AZIBs) due to their high theoretical energy density and cost‐effectiveness. However, their low electronic conductivity and tendency to dissolve during cycling have limited their applications in AZIBs. Herein, a one‐step calcination method is proposed to incorporate sulfur and nitrogen anions into the MnO 2 structure (referred to as NS‐MnO 2 ). Characterizations and theoretical calculations confirm that the sulfur and nitrogen dopants improve the intrinsic electronic conductivity and structural stability of MnO 2 . Specifically, sulfur doping accelerates the diffusion of Zn 2+ , while the formation of Mn─N…

• NN
  National Natural Science Foundation of China

  Awards: 51967020, 22479007
• CP
  China Postdoctoral Science Foundation

  Awards: GZC20232668, 2024M763264