Ionogel-based solid-state supercapacitor operating over a wide range of temperature. (10th July 2016)

• Record Type: Journal Article
• Authors: Negre, L.; Daffos, B.; Turq, V.; Taberna, P.L.; Simon, P.
• Is Part Of: Electrochimica acta. Volume 206(2016)
• Page Start: 490
• Page End: 495
• Publication Date: 2016-07-10
• Subjects: Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.02.013
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: An inorganic gel polymer electrolyte based on the confinement of an ionic liquid mixture (1:1 by weight or molar ratio) of N-methyl-N-propylpiperidinium bis(fluorosulfonyl)imide (PIP13FSI) and N-butyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (PYR14FSI) into a SiO2 matrix prepared from a sol-gel method was prepared and further used as electrolyte in an all solid-state supercapacitor. The synthetized ionogel exhibits a high ionic conductivity over a wide temperature range (from 0.2 mS cm −1 at −40 °C up to 10 mS cm −1 at 60 °C). The ionogel-based supercapacitor using two activated carbon electrodes can be operated over 3 V cell voltage window. Moreover this all solid-supercapacitor shows a capacitance up to 90 F g −1 at room temperature. These encouraging results show the interest of developing such devices, including non-toxic and safer electrolytes, packaging issues and flexible devices development.