Synthesis, properties and application of titania incorporated potassium iodoplumbite nanocomposite solid electrolyte for the manufacture of high value capacitors

This work reports the preparation, structural, electrochemical, and dielectric properties of the nanocomposite solid electrolyte (100KPbI3) accumulating TiO2 filler of different weight percentages (wt %) varying from 1 to 5 wt %. The electrical functioning of the materials is figured out via ac and dc conductivity using LCR meter. The influence of concentration displaying the maximum conductivity and its use as high-value capacitors are novel and are investigated with the support of impedance analysis. The effects brought by the experiment show that the electrical activities of KPbI3/TiO2 nanocomposite with 4 wt % TiO2 are excellent compared to that of undoped KPbI3 solid electrolyte and other nanocomposites. The optimum composite composition (4 wt % TiO2) exhibited high performance of ionic conductivity σ ∼ 0.8 × 10−6 Scm−1 and low activation energy of 0.395 eV. Structural and morphological changes in solid electrolytes are well relevant to conductivity enhancement. The investigations in the present work pave the way for the manufacture of solid ion electrolytes with superior performance. •(1−x)(100KPbI3):xTiO2 nanocomposite solid electrolytes (NCSEs) have been synthesized.•4 wt % TiO2 sample shows maximum conductivity of σ ∼0.8 × 10−6 S cm−1.•The results showed that distribution of relaxation time is temperature-independent.•Physical characterizations suggested that 4 wt % TiO2 composite showed better amorphosity.•The relative dielectric constant and dielectric loss were stable up to 250 °C for 4 wt % TiO2 composite.•4 wt % TiO2 displayed better performances in terms of conductivity, morphology, crystallinity, and dielectric permittivity.