Cellulose and activated carbon based flexible electrical double-layer capacitor electrode: Preparation and characterization

By Murashko, Kirill; Nevstrueva, Daria; Pihlajam
Published in Energy NULL 2017

Abstract

Abstract Supercapacitors are efficient electric energy storage devices with a wide range of possible applications. In this study, a natural cellulose-activated carbon composite material that can be used as an electrode in a flexible supercapacitor is prepared using a phase inversion technique. The composite material preparation and testing methodology are described and the electrochemical characteristics of the composite material are analysed as a function of the activated carbon (AC) to natural cellulose (NC) mass ratio. Analysis of the influence of the AC/NC mass ratio on the electrochemical characteristics of the composite material demonstrated the importance of optimal mass ratio determination prior to manufacture. To prove an applicability of the {NC} binder, the electrochemical characteristics of the composite material prepared with a {NC} binder are compared with those of a composite material with a standard poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) binder. The experimental results confirm the applicability of using {NC} as a binder in the preparation of a composite material that can be used as a flexible self-standing supercapacitor electrode.

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