fig4
Figure 4. (A) Schematic representation of ion transport by CNTs to promote NVPF grain growth; (B) Synthesis process of NVPF@CNT composite materials; (C) Cycle performance of different materials. Reproduced with permission[142]. Copyright 2023, Elsevier; (D) SEM and (E) HRTEM images of NVF-GEL/rGO. Reproduced with permission[149]. Copyright 2022, Elsevier. (F) Schematic representation of the synthesis process. The illustration is TEM image of NVPF@rGO/CNTs. Reproduced with permission[150]. Copyright 2023, Wiley. CNT: Carbon nanotube; NVPF: Na3V2(PO4)2F3; NVPF@CNT: Na3V2(PO4)2F3 coated with carbon nanotubes; SEM: scanning electron microscope; HRTEM: high resolution transmission electron microscope; NVF-GEL/rGO: NVPF modified reduced graphene oxide using GEL method.
