Electrochemical capacitor materials based on carbon and luminophors doped with lanthanide ions. (20th September 2017)

• Record Type: Journal Article
• Authors: Kubasiewicz, Konrad; Slesinski, Adam; Gastol, Dominika; Lis, Stefan; Frackowiak, Elzbieta
• Is Part Of: Journal of physics. Volume 50:Number 41(2017)
• Publication Date: 2017-09-20
• Subjects: electrochemical capacitor -- luminescence -- lanthanides -- carbon/luminophor composite; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/aa875b
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: The described research is focused on the hybrid, bi-functional composite materials dedicated to the electrochemical capacitor electrodes. The novel material exhibits both luminescent and capacitive properties. The fabrication process of semi-products and the final composite is described. The structure and homogeneity of luminophors are confirmed with the XRD analysis. The morphology of materials is also determined by TEM and SEM images. The detailed spectroscopic characterization includes excitation and emission spectra, luminescence decay curves, emission lifetimes, CIE chromaticity indexes. The electrochemical studies of composite electrodes carried out by cyclic voltammetry and impedance spectroscopy exhibit good charge propagation. For the first time, inorganic luminophors containing doped LaF3 and GdVO4 have been successfully used for electrochemical capacitor. It is the primary stage to design a new generation of light emitting capacitors utilizing more stable inorganic luminophors than organic-based ones.