Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 22, Issue 3, Pages 835-847Publisher
SPRINGER
DOI: 10.1007/s10008-017-3813-y
Keywords
Cobalt ferrite MNPs; Co-precipitation; Hydrothermal synthesis; Coercive field; Magnetization; Supercapacitor
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Funding
- General Direction of Scientific Research and Technological Development (DGRSDT) via the Algerian Ministry of Higher Education and Scientific Research
- South African Research Chairs Initiative (SARChI) in Carbon Technology and Materials of the Department of Science and Technology (DST)
- National Research Foundation (NRF) through the Algeria/South Africa collaboration program
- University of Annaba
- DGRSDT
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Cobalt ferrite magnetic nanoparticles (CoFe2O4-MNPs) were synthesized by hydrothermal and co-precipitation methods using different precursors such as nitrates, chlorides, and acetates, at different concentrations with/without surfactant under different growth conditions. The structural and morphological analyses reveal the formation of a single-phase CoFe2O4 in nanoplatelet-shaped NPs with average particle size between 11 and 26 nm depending on synthesis condition. The specific surface area of these NPs obtained by hydrothermal method was similar to 34 m(2) g(-1). Electrochemical performances of the obtained nanoparticles in a three-electrode configuration with a 6 M KOH electrolyte revealed a specific capacitance (C (s)) of 429 F/g at 0.5 A/g, with excellent capacitance retention of 98.8% after 6000 cycles at 10 A/g for the electro-active NPs synthesized by hydrothermal method at 200 A degrees C for 18 h.
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