P2/O3 Biphase Integrated With Fence-Type Superstructure Enables Robust Sodium Layered Oxide Cathodes.
Layered oxides are promising cathode candidates for sodium-ion batteries (SIBs) owing to their tunable compositions and high specific capacities. However, detrimental phase transitions, Jahn-Teller (J-T) distortion, and transition-metal (TM) migration during cycling typically induce severe structural degradation and ir...