Optimization of seebeck coefficients in polyaniline-doped manganese dioxide nanocomposites.

ABSTRACT: Polyaniline (PANI) and PANI-MnO2 composites were synthesized via a chemical route with varying manganese dioxide (MnO2) content, specifically 5wt% and 15wt%. X-ray diffraction (XRD) confirmed the structural formation of both PANI and PANI-MnO2 composites. The direct current conductivity was measured, showing an increase with temperature: at 393K, pure PANI had a conductivity of 2.25 × 10-4 S/cm, which increased significantly in the composites, reaching 9.03 × 10-4 S/cm for the 15wt% MnO2 composite. The Seebeck coefficient also increased with temperature and MnO2 concentration, achieving a maximum value of 52 mV K-1 at 373K for the 15wt% MnO2 composite. These results indicate that the synthesized PANI- MnO2 composites exhibit semiconducting behavior with improved thermoelectric properties,

SUBMITTER: Molino J 

PROVIDER: S-EPMC12002486 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature