Journal
APPLIED PHYSICS LETTERS
Volume 116, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5138243
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- University of Sharjah, UAE [1602040634-P]
- Alabama Transportation Institute at the University of Alabama, USA
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In this study, we report the electrical response of two sets of solid-state fractional-order electrochemical capacitors for which the low-frequency impedance phase angle can be tuned from -69 degrees to -7 degrees. The configuration makes use of a gel electrolyte in which carbonaceous additives (graphite or reduced graphene oxide) are dispersed at different proportions. Such a disordered electrolyte structure results in subdiffusive charge transport and thus a frequency dispersive capacitive-resistive behavior typical of a constant phase element, which can be useful for both frequency applications and energy storage purposes. Published under license by AIP Publishing.
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