Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Electrochemical properties depending on heteroatom and surface property of various carbon sources/NiO composites as supercapacitor electrode
Ist Teil von
Journal of the Chinese Chemical Society (Taipei), 2022-12, Vol.69 (12), p.1974-1980
Ort / Verlag
Weinheim: Wiley‐VCH Verlag GmbH & Co. KGaA
Erscheinungsjahr
2022
Link zum Volltext
Quelle
Wiley Online Library Journals【キャンパス外アクセス可】
Beschreibungen/Notizen
This study describes the creation and use of composites of nickel oxide and activated carbon as supercapacitor electrodes. A one‐pot reaction is used to synthesize composite materials of nickel oxide and activated carbon (microalgae, asphaltene, and wood). A precursor solution of Ni(OH)2 is blended with activated carbon through a precipitating method at a controlled weight ratio of nickel oxide and activated carbon, then the obtained powder is calcinated at 300°C for 3 hr. The composites are analyzed by X‐ray diffraction, scanning electron microscopy, and energy dispersive X‐ray analysis (EDX). It is confirmed that nickel oxide sprouted on activated carbon surface. At a nickel oxide activated carbon weight ratio of 1:20, the greatest specific capacitances at 1 A/g current density are 624.2, 487.1, and 403 F/g, respectively.
In this study, we investigated supercapacitor electrode materials using wood, microalgae, and asphaltene‐derived activated carbon. Also, the electrochemical characteristics of the composite combined with activated carbon and NiO were examined. It is demonstrated that nickel oxide grew on the surface of the activated carbon and improved the electrochemical properties of the electrode materials.