Printed environmentally friendly supercapacitors with ionic liquid electrolytes on paper

Fredrik Pettersson, J Keskinen, Tommi Remonen, von Hertzen L, E Jansson, K Tappura, Yanxi Zhang, Carl-Eric Wilen, Ronald Österbacka

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    35 Sitaatiot (Scopus)

    Abstrakti

    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 (TM), respectively. A mixture of ethylene glycol and choline chloride, Glyceline (TM), show the highest capacitance and power densities of the electrolytes being tested, including the imidazolium alternatives.
    AlkuperäiskieliEi tiedossa
    Sivut298–304
    Sivumäärä7
    JulkaisuJournal of Power Sources
    Vuosikerta271
    DOI - pysyväislinkit
    TilaJulkaistu - 2014
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Keywords

    • Activated carbon
    • Deep eutectic solvent
    • Environmentally friendly
    • Printed
    • Supercapacitor

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