A high-entropy Prussian Blue shell enabling the high-rate and long-term cycling stability of the Mn-PBA cathode for sodium-ion batteries

To address the poor cycling stability of Mn-PBA based cathodes, herein, we introduce a high-entropy Prussian Blue shell onto the Mn-PBA surface. Due to the synergistic effect, the rate performance and long-term cycling stability of this new type of cathode have been significantly improved. This work provides a new paradigm for the development of PBA-based SIB cathodes.