Polypyrrole is an intrinsically conducting polymer formed by the oxidative polymerisation of pyrrole, giving a conjugated backbone with a nitrogen heteroatom in each repeat unit. Conductivity appears only in the doped, oxidised state, and the counter-ion incorporated during synthesis remains part of the material [1]. Chemical or electrochemical routes give different morphologies, ranging from granular films to nanotubes, and the morphology controls both the accessible surface and the switching rate [2]. The polymer is brittle and insoluble, so it normally appears as a coating on a textile or as a composite with a flexible matrix [3]. Composite electrodes with carbon or metal oxide additions give higher capacitance than the polymer alone, at the cost of cycling stability [4].
- conducting polymer
- doping
- conjugated backbone
- supercapacitor
- over-oxidation
- pyrrole
- composite electrode
Conducting polymers and applications·Polymers and Plastics·Materials Science·Physical Sciences
References
- Sidhu, N.K.; Rastogi, A.; Synthesis and Electrochemical Properties of Polypyrrole Conducting Polymer in Sheath like Nanotube Arrays Structured over TiO2 for Supercapacitor Energy Storage Devices. MRS Proceedings 2015, 1749, mrsf14-1749-jj03-18, 10.1557/opl.2015.78.
- Stejskal, J.; Jurča, M.; Trchová, M.; Prokeš, J.; Křivka, I.; In-Situ Coating of Iron with a Conducting Polymer, Polypyrrole, as a Promise for Corrosion Protection. Materials 2024, 17, 4783, 10.3390/ma17194783.
- Sidhu, N.K.; Rastogi, A.C.; Vertically aligned ZnO nanorod core-polypyrrole conducting polymer sheath and nanotube arrays for electrochemical supercapacitor energy storage. Nanoscale Research Letters 2014, 9, 453, 10.1186/1556-276x-9-453.
- Omastová, M.; Pavlinec, J.; Pionteck, J.; Simon, F.; Synthesis, Electrical Properties and Stability of Polypyrrole-Containing Conducting Polymer Composites. Polymer International 1997, 43, 109-116, 10.1002/(sici)1097-0126(199706)43:2<109::aid-pi707>3.0.co;2-t.