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Polymer Sodium Batteries
In article number 2214904, Hong Jin Fan and co‐workers show Fe substitution into NMFO induces a stable crystal structure and cathode electrolyte interface. Such a dual effect renders the polymer solid‐state battery with improved cycle performance.
The development of polymer sodium batteries requires cathode materials with stable interfaces to avoid poor interfacial contact and interfacial side reactions during cycling. Here, a co‐engineering strategy is deployed to tailor the cathode internal structure and improve the cathode interface stability through bonding interactions. Internally, the effect of low‐cost Fe substitution in the obtained...