Abstract
Electrochemical properties of a composite material based on PEDOT:PSS and MnO2 were investigated. The composite was synthesized by spontaneous redox reaction between reduced fragments of PEDOT:PSS (poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)) and permanganate ions. PEDOT:PSS/MnO2 composite dispersion can be drop-cast both on rigid and flexible, conducting and non-conducting substrates. Electrochemical studies of PEDOT:PSS/MnO2 electrodes were performed in 0.1 M LiClO4 aqueous electrolyte. The specific capacity values of the composite were 46 and 33 F g−1 at 10 and 50 mV s−1, respectively. Capacity retention after 1000 galvanostatic charge-discharge cycles was 73 %. The morphology of the material was investigated by SEM; the oxidation state of manganese in oxide was characterized by XPS.
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