Roles of gel polymer electrolytes for high-power activated carbon supercapacitors: ion reservoir and binder-like effects
Habin Park, Jaewon Chung, Hansol Yong, Jongwon Jung, Cheolsoo Jung
Abstract
Fourier-transform infrared spectroscopy, and differential information of galvanostatic curves reveals that the increased rate-capability is derived dominantly by an improved non-faradaic process by the ion reservoir effect of GPEs in the AC. Although the designed GPEs induce slightly higher bulk and diffusion resistance at the incipient stage, the GPEs play a binder-like function to suppress detachment of AC particles and aggravation of impedance parameters during cycling at 3.4 V.
Topics & Concepts
SupercapacitorElectrolyteMaterials scienceCyclic voltammetryChemical engineeringFourier transform infrared spectroscopyElectrochemistryPolymerDielectric spectroscopyDiffusionCarbon fibersIonActivated carbonElectrodeChemistryComposite materialOrganic chemistryAdsorptionComposite numberThermodynamicsPhysical chemistryPhysicsEngineeringSupercapacitor Materials and FabricationAdvanced battery technologies researchAdvanced Battery Materials and Technologies