Characterization of commercial supercapacitors for low temperature applications - Archive ouverte HAL Access content directly
Journal Articles Journal of Power Sources Year : 2012

Characterization of commercial supercapacitors for low temperature applications

Abstract

Electrochemical characterizations at low temperature and floating tests have been performed on 600F commercial supercapacitor (SC) for acetonitrile (AN)-based and AN + methyl acetate (MA) mixed electrolytes. From −40 to +20 °C, AN electrolyte showed slightly higher capacitance than those of AN + MA mixed electrolytes (25 and 33 vol.% of MA). At −55 °C, however, AN electrolyte did not cycle at all, while MA mixed electrolyte normally cycled with a slight decrease in their capacitance. From electrochemical impedance spectroscopy measurements, the whole resistance for AN-based cells at −55 °C was found to be about 10,000 times higher than that of +20 °C, while a 40-fold increase in the cell resistance was obtained for the MA mixture between 20 and −55 °C. From the results of floating tests at 2.7 V and 60 °C for 1 month, the 25 vol.% MA mixture showed no change and slight decreased but stable capacitance.
Fichier principal
Vignette du fichier
Iwama_13893.pdf (734.21 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-01153244 , version 1 (19-05-2015)

Identifiers

Cite

Etsuro Iwama, Pierre-Louis Taberna, Philippe Azais, Laurent Brégeon, Patrice Simon. Characterization of commercial supercapacitors for low temperature applications. Journal of Power Sources, 2012, vol. 219, pp. 235-239. ⟨10.1016/j.jpowsour.2012.07.029⟩. ⟨hal-01153244⟩
148 View
1437 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More