Journal
INTERNATIONAL JOURNAL OF GREEN ENERGY
Volume 16, Issue 6, Pages 476-482Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15435075.2019.1580198
Keywords
Carbon composite; cobalt ferrite; pseudocapacitor; energy storage
Funding
- Research Councils of Yasouj University
- Shiraz University of Medical Sciences [13194]
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A carbon/CoFe2O4 composite was synthesized by precipitation method. The morphology of the composite was analyzed using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, Fourier Transform Infrared Spectra, and vibrating sample magnetometry. The electrocapacitive behaviors of the composite has been studies by cycle voltammogram and galvanic charge/discharge. The size of the nanoparticles carbon composite of CoFe2O4 was uniform and 209 nm. Due to a high percent of carbon, electrochemical measurements showed electrical double layer mechanism. Specifically, the carbon/cobalt ferrite electrode exhibited high specific capacitance of 102.5 F g(-1) at a current density of 0.16 A g(-1), and high rate capability with 30% retention of capacitance even up to 20 A g(-1), and excellent cycling stability with 81.5% retention of the initial capacitance after 6000 charge/discharge cycles, supporting that the carbon cobalt ferrite composite electrode could be a potential candidate for supercapacitor application.
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