Structural regulation of a P2-type cathode via multi-cation doping for high-rate and stable sodium-ion batteries

An entropy modulation strategy is used to prepare the Na 0.7 Mn 0.5 Ni 0.15 Cu 0.12 Li 0.03 Fe 0.05 O 2 cathode, providing regulated lattice parameters and configurational entropy, which can enhance its reaction kinetics and cycling stability.