1：Experimental Design and Method Selection:

The study employs a hydrothermal method for synthesizing Na3V2O2(PO4)2F nanorods and a low-temperature polymerization method for coating with PEDOT. Electrochemical measurements are conducted using coin cells to evaluate performance.

2：Sample Selection and Data Sources:

Samples include synthesized Na3V2O2(PO4)2F, PEDOT-coated variants, and activated carbon derived from peanut shells. Data are obtained from material characterization and electrochemical tests.

3：List of Experimental Equipment and Materials:

Equipment includes SEM (Hitachi S-4800I), TEM (FEI Tecnai G2F20), XRD (Bruker D8 Advance), XPS (Perkin-Elmer PHI 550), Raman spectrometer (HORIBA Scientific LabRAM HR), battery testing system (LAND CT2001A), electrochemical workstation (CHI 760E), and EIS analyzer (ZiveLab). Materials include V2O5, H2C2O4·2H2O, NH4H2PO4, Na2CO3, NaF, EDOT, (NH4)2S2O8, HCl, KOH, acetylene black, CMC, PVDF, NMP, NaClO4, EC/PC, FEC, and glass microfiber filters.

4：Experimental Procedures and Operational Workflow:

Synthesis involves hydrothermal treatment at 180°C for 24 h, calcination at 500°C, PEDOT coating at room temperature, and activation of carbon. Electrodes are prepared by mixing active materials with binders and casting on Al foil. Cells are assembled in an Ar-filled glove box, and tests include GCD, CV, and EIS.

5：Data Analysis Methods:

Data are analyzed using equations for energy and power densities, Randles–Sevcik equation for diffusion coefficients, and standard electrochemical software for curve fitting and interpretation.