Journal
CURRENT APPLIED PHYSICS
Volume 10, Issue 2, Pages 391-394Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cap.2009.06.032
Keywords
Activated carbons; Titanium oxide; Composite electrodes; Specific capacitance
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Energy-storage composite electrodes were prepared by mixing activated carbons (ACs) modified with nanosize titanium oxide (TiO2) through ultrasonic vibration in ethanol solution for 30 min. We examined the cyclic voltammetry of the composite electrodes in an aqueous electrolyte, 1 M H2SO4. It was found that the specific capacitance of the composite electrodes measured in a range of 0-0.8 V was increased from 100 to 155 F/g compared electrodes comprised of ACs only. This was attributed to a reduction of polarization of the ACs modified by nanosized TiO2. (C) 2009 Elsevier B.V. All rights reserved.
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