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Issue 10, 2013
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Low temperature water based electrolytes for MnO2/carbon supercapacitors

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Abstract

Birnessite nanotubes and activated carbon electrodes have been used in supercapacitor cells to assess the performance of new aqueous based electrolyte systems at temperatures as low as −30 °C. The addition of ethylene glycol to aqueous sodium, lithium, potassium and ammonium sulfates has resulted in electrolytes that are still in liquid phase at such low temperatures. Extensive electrochemical testing showed that in such systems, operation of these aqueous based supercapacitors is possible at −30 °C with a specific capacitance of over 30 F g−1 and good cycleability.

Graphical abstract: Low temperature water based electrolytes for MnO2/carbon supercapacitors

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Publication details

The article was received on 25 Jan 2013, accepted on 25 Jan 2013 and first published on 28 Jan 2013


Article type: Paper
DOI: 10.1039/C3CP50359C
Citation: Phys. Chem. Chem. Phys., 2013,15, 3518-3526
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    Low temperature water based electrolytes for MnO2/carbon supercapacitors

    A. J. Roberts, A. F. Danil de Namor and R. C. T. Slade, Phys. Chem. Chem. Phys., 2013, 15, 3518
    DOI: 10.1039/C3CP50359C

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