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
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- 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. [CrossRef]
- 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. [CrossRef]
- 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. [CrossRef]