The data of the article“Design and Fabrication of LiNbO3/PVDF Composite Solid Electrolytes and Their Electrochemical Properties”

In this study, lithium niobate (LiNbO₃), a ferroelectric material with a high dielectric constant, was used as the functional filler. Two polymer matrices—polyvinylidene fluoride (PVDF) and polyvinylidene fluoride-hexafluoropropylene copolymer (PVDF-HFP)—were introduced, and composite solid-state electrolyte films were prepared via the solution casting method.

The study systematically investigated the effects of filler content (10 wt%, 30 wt%, and 50 wt%) and the type of matrix on key properties such as the electrolyte’s ionic conductivity, electrochemical stability window, and lithium anode interface stability. The dataset encompasses multidimensional experimental data, including material synthesis parameters, phase and microstructural characterization (XRD, SEM), electrochemical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), critical current density (CCD) testing, and long-cycle performance testing of lithium symmetric cells.Raw Data Format: Excel (.xlsx) or .txt formats, including raw EIS impedance values, LSV current-voltage data, cycle time-voltage data, etc.