Journal of The Electrochemical Society · 1998 · 139 citations · 0 references
Secondary BatteriesRechargeable Battery ApplicationsEngineeringElectrode-electrolyte InterfaceRedox PolymersChemistryAqueous BatteryPolymersConducting PolymerOrganic ElectrochemistryHybrid MaterialsPolymer ChemistryMaterials ScienceBattery Electrode MaterialsAir‐stable Polyindole FilmsEnergy StorageSolid-state BatteryAnodic OxidationElectrochemistryElectrochemical SynthesisElectrochemical Energy StorageBatteries
The electrochemical synthesis of polyindole upon anodic oxidation of indole in dichloromethane containing 0.1 M tetrabutylammonium perchlorate (TBAP) is reported. The air‐stable polyindole films were obtained by sweeping the potential between −0.2 and 1.0 V vs Ag/AgCl as well as at constant potential (1.0 V vs Ag/AgCl) and constant current (0.2–0.3 mA/cm2). The conductivities of such films were found to lie in the range 0.1–1 S cm−1. The behavior of the polymer was studied by cyclic voltammetry and chronoamperometry. The electrochemically produced polyindole was studied as active material for secondary batteries in aqueous electrolyte. A Zn/1 M /polyindole cell gave a maximum capacity of 90 Ah kg−1 and an open‐circuit potential of 1.45 V. This battery showed good reversibility and good coulombic efficiency.