Electrochemical Properties of Composite Electrodes, Prepared by Spontaneous Deposition of Manganese Oxide into Poly-3,4-ethylendioxythiophene

EQCM study of redox properties of PEDOT/MnO2 composite films in aqueous electrolytes

“…PEDOT films were electrodeposited under galvanostatic conditions (j ~ 1 mA cm 2 ) [24,25,38], from acetonitrile (AN) solution of 0.05 M EDOT and 0.1 M LiClO4. The range of potential variation during synthesis was 1.1-0.9 V, time of deposition usually was 100 s, if not specified otherwise.…”

“…In particular, PEDOT/MnO2 composites, obtained by spontaneous redox reaction between reduced PEDOT and MnO4ions [23][24][25] showed specific capacity values in the range 150-250 F g -1 which increased with the increase of MnO2 loading into the PEDOT film. The calculated specific capacitance values related to contribution of manganese oxide Cs,MnO2 were in the range 274-310 F g -1 , whereas for the PEDOT component they were close to 70-75 F g -1 . 24It is known that in a relatively broad potential range (0.0-0.8 V) (e.g.…”

“…In these composite materials, the so-called pseudocapacitance originates from charge-transfer (Faradaic) processes that take place in the both constituents. A number of conducting polymers, such as polyanilines, polypyrroles and polythiophenes in combination with transition metal oxides, such as RuO2 [9][10][11], IrO2 [12], Co3O4 [13][14] and MnO2 [15][16][17][18][19][20][21][22][23][24][25] were recently proposed as composite electrode materials for electrochemical capacitors. The advantages of manganese dioxide are low cost, environmental compatibility and high specific capacitance.…”

“…This last property can be better utilized in combination of fine dispersed MnO2 with conducting polymer matrix. In several papers, the values of capacitance of PEDOT/MnO2 composites were reported in the range of 148-487 F g -1 [17][18][19][20][21][22][23][24][25].…”

Еlectrochemical properties of poly-3,4-ethylenedioxythiophene:polystyrene sulfonate/manganese dioxide composite electrode material

“…The redox reaction between permanganate ions and reduced form of conducting polymer was employed previously for deposition of MnO 2 nanoparticles into PEDOT nanofibers [9] and into bulk PEDOT films [10]. However, to the best of our knowledge, there has been no report on the synthesis of PEDOT:PSS/MnO 2 nanocomposite through redox reaction of This paper is dedicated to Prof. Gy rgy Inzelt, a distinguished Hungarian electrochemist, on his 70th birthday anniversary.…”