Impact of the aqueous pyrrolidinium hydrogen sulfate electrolyte formulation on transport properties and electrochemical performances for polyaniline-based supercapacitor - Physico-chimie des Matériaux et des Electrolytes pour l'Energie Laboratoire - - EA 6299 Accéder directement au contenu
Article Dans Une Revue Journal of Power Sources Année : 2019

Impact of the aqueous pyrrolidinium hydrogen sulfate electrolyte formulation on transport properties and electrochemical performances for polyaniline-based supercapacitor

Résumé

During this work, the protic ionic liquid (PIL) pyrrolidinium hydrogen sulfate, [Pyrr][HSO4], is synthesized and its mixture with water is then characterized prior to be used as a potential electrolyte for polyaniline (Pani) based supercapacitors. The transport properties of the [Pyrr][HSO4] – water binary mixture is determined at three different PIL/water weight ratios (i.e. 14/86, 41/59 and 70/30) as a function of the temperature from 5 to 70 °C. In the light of such an analysis, the optimum value of the ionic conductivity, reaching 178 mS/cm at 25 °C, is obtained for the [Pyrr][HSO4]/water weight ratio close to 41/59. The electrochemical behavior of Pani is then investigated in these electrolytes to further examine the impact of their formulation on supercapacitor performances. Based on this work, the Pani electrode shows the best electrochemical performances using the electrolyte 41/59 [Pyrr][HSO4]/water weight ratio leading to a specific capacitance of 380 F/g at 10 mV/s, a low relaxation time constant τ0 close to 5 s and a gravimetric capacitance retention of 68% after 1000 cycles at 2 A/g.

Domaines

Chimie Matériaux
Fichier principal
Vignette du fichier
S0378775319305671.pdf (479.65 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02267976 , version 1 (26-10-2021)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Fatima Al-Zohbi, Johan Jacquemin, Fouad Ghamouss, Bruno Schmaltz, Mohamed Abarbri, et al.. Impact of the aqueous pyrrolidinium hydrogen sulfate electrolyte formulation on transport properties and electrochemical performances for polyaniline-based supercapacitor. Journal of Power Sources, 2019, 431, pp.162-169. ⟨10.1016/j.jpowsour.2019.05.018⟩. ⟨hal-02267976⟩

Collections

UNIV-TOURS PCM2E
77 Consultations
49 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More