TY - JOUR
T1 - Printed environmentally friendly supercapacitors with ionic liquid electrolytes on paper
AU - Pettersson, F.
AU - Keskinen, J.
AU - Remonen, T.
AU - Von Hertzen, L.
AU - Jansson, E.
AU - Tappura, K.
AU - Zhang, Y.
AU - Wilén, C. E.
AU - Österbacka, R.
N1 - Funding Information:
This work was done within the Tekes funded PRISU project. The authors would like to acknowledge Max Johansson for the confocal microscopy images and valuable discussions.
PY - 2014/12/20
Y1 - 2014/12/20
N2 - Environmentally friendly supercapacitors are fabricated using commercial grade aluminum coated paper as a substrate and symmetrical activated carbon electrodes as large area electrodes. Different choline chloride-based eutectic solvents are used as electrolyte. These are inexpensive, environmentally friendly and have a larger operating window compared to that of water electrolytes. As the entire device is printed and the materials used are inexpensive, both small- and large-area power sources can be fabricated to be used in cheap, disposable and recyclable devices. Supercapacitors with different eutectic solvents are measured using cyclic charge-discharge and impedance spectroscopy measurements and compared to one widely used and one "green" imidazolium ionic liquid; EMIM:TFSI and EcoEng 212™, respectively. A mixture of ethylene glycol and choline chloride, Glyceline™, show the highest capacitance and power densities of the electrolytes being tested, including the imidazolium alternatives.
AB - Environmentally friendly supercapacitors are fabricated using commercial grade aluminum coated paper as a substrate and symmetrical activated carbon electrodes as large area electrodes. Different choline chloride-based eutectic solvents are used as electrolyte. These are inexpensive, environmentally friendly and have a larger operating window compared to that of water electrolytes. As the entire device is printed and the materials used are inexpensive, both small- and large-area power sources can be fabricated to be used in cheap, disposable and recyclable devices. Supercapacitors with different eutectic solvents are measured using cyclic charge-discharge and impedance spectroscopy measurements and compared to one widely used and one "green" imidazolium ionic liquid; EMIM:TFSI and EcoEng 212™, respectively. A mixture of ethylene glycol and choline chloride, Glyceline™, show the highest capacitance and power densities of the electrolytes being tested, including the imidazolium alternatives.
KW - Supercapacitor
KW - Deep eutectic solvent
KW - Printed
KW - Environmentally friendly
KW - Activated carbon
UR - http://www.scopus.com/inward/record.url?scp=84906542903&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2014.08.020
DO - 10.1016/j.jpowsour.2014.08.020
M3 - Article
SN - 0378-7753
VL - 271
SP - 298
EP - 304
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -