Comparative Study of PEDOT- and PEDOT:PSS Modified δ-MnO₂ Cathodes for Aqueous Zinc Batteries with Enhanced Properties

Chemically synthesized layered manganese dioxide ( δ -MnO 2 ) modified by poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) dispersion were used as cathode materials for aqueous Zn-ion batteries (AZIBs). A comparative study of electrochemical properties cathodes with pristine MnO chemically conducting polymers in different forms was performed cycling voltammetry galvanostatic charge-discharge curves Zn 2+ -containing electrolyte solutions. The results tests indicate the significant improvement specific capacity electrodes sequence , /PEDOT /PEDOT:PSS composites. electrode delivered a discharge 278 mAh·g −1 at current density 0.3 A·g after 100 cycles, whereas values 238 121 (capacity retention is 99%, 99.5% 89%, respectively). These obtained dioxide-based are demonstrating positive role intrinsically polymer, especially case surface modification electroactive particles PEDOT:PSS dispersion.