Potential Cycling Stability of Composite Films of Graphene Derivatives and Poly(3,4‐ethylenedioxythiophene)

Abstract

The potential cycling stability is compared for poly(3,4‐ethylenedioxythiophene) (PEDOT) composite films prepared either with graphene oxide (GO), reduced GO (RGO) or poly(styrenesulfonate) (PSS). It is shown that PEDOT‐GO had reversible redox behavior and fast charging/discharging with at least equal electrochemical properties to PEDOT‐PSS. 10 000 potential cycles between −0.5–0.5 V in the three‐electrode cell decreased the anodic charge of PEDOT‐GO with 6.2 %. In the two‐electrode cell, the decrease was only 5.4 % between 0–0.7 V. The potential cycling stability of PEDOT‐GO and PEDOT‐RGO prepared electrochemically without other additives than GO has not been previously reported.

Solid‐Contact Ion‐Selective Electrodes Paving the Way for Improved Non‐Zero Current Sensors: A Minireview

“…[25,26] It should be underlined that conducting polymers including alkylated polythiophenes can undergo redox process while they are present under the membrane, either spontaneously (oxidation by atmospheric oxygen in the presence of lipophilic anions [27,28] ) or under influence of electrochemical trigger. [29] The other group of materials that offer significant benefits as transducers in ASS-ISEs are carbon nanostructures, mainly multi-walled carbon nanotubes (MWCNTs) [30][31][32][33][34][35][36][37][38] but also other three-dimensionally ordered macroporous carbon, [39] colloidimprinted mesoporous, [40] graphene or its composites, [41][42][43] fullerenes. [44] Elimination of some drawbacks of classical systems as well as significant advantages are offered by application of composite materials, among others prepared from carbon nanostructures and conducting polymers, [45][46][47][48] e. g. poly (octylthiophene) and carbon nanotubes.…”