| Version | Summary | Created by | Modification | Content Size | Created at | Operation |
|---|---|---|---|---|---|---|
| 1 | Jack Zhong | -- | 135 | 2026-10-20 08:52:25 | | | |
| 2 | Jack Zhong | -11 word(s) | 124 | 2026-10-20 08:54:23 | | |
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].