fig5

From: Recent research progress in the application of Na₃V₂(PO₄)₂F₃ cathode materials in sodium-ion batteries: synthesis, modification, and battery optimization

Recent research progress in the application of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> cathode materials in sodium-ion batteries: synthesis, modification, and battery optimization

Figure 5. Schematic representation of ion-doped NVPF crystal structures: (A) High-entropy element. Reproduced with permission^[154]. Copyright 2024, Elsevier; (B) Cr³⁺. Reproduced with permission^[166]. Copyright 2024, Elsevier; (C) Mn²⁺. Reproduced with permission^[169]. Copyright 2023, MDPI; (D) Ti⁴⁺. Reproduced with permission^[170]. Copyright 2023, Chemistry Europe; Rate performance of ion-doped NVPF materials: (E) Ca²⁺. Reproduced with permission^[162]. Copyright 2024, American Chemical Society; (F) Al³⁺. Reproduced with permission^[15]. Copyright 2022, Elsevier; (G) Cr³⁺. Reproduced with permission^[166]. Copyright 2024, Elsevier. NVPF: Na₃V₂(PO₄)₂F₃.