Deep eutectic solvent based on sodium cations as an electrolyte for supercapacitor application - Physico-chimie des Matériaux et des Electrolytes pour l'Energie Laboratoire - - EA 6299 Accéder directement au contenu
Article Dans Une Revue RSC Advances Année : 2014

Deep eutectic solvent based on sodium cations as an electrolyte for supercapacitor application

Résumé

This study proposes a new deep eutectic solvent based on sodium nitrate and N-methylacetamide as an electrolyte for carbon-based supercapacitors at 80°C. The reversible intercalation of ions into the graphitized ultra-micropores of activated carbon, separately detected at negative and positive electrodes, permits high pseudo-capacitance (up to 302 F g−1). The SEM/EDX mapping and XRD profile show homogeneous distribution of Na in negative polarized electrodes indicating that sodium is well incorporated in the ultra-micropores of the carbon structure. The good capacitance obtained at 80 °C in two-electrode cells at an operating voltage up to 2.0 V remained stable after 1000 charge–discharge cycles. Based on its physicochemical properties, as well as its electrochemical performances and stabilities, the sodium based DES can be considered a promising electrolyte for supercapacitor applications.
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Dates et versions

hal-02061615 , version 1 (08-03-2019)

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W. Zaïdi, L. Timperman, M. Anouti. Deep eutectic solvent based on sodium cations as an electrolyte for supercapacitor application. RSC Advances, 2014, 4 (86), pp.45647-45652. ⟨10.1039/c4ra08178a⟩. ⟨hal-02061615⟩

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