advanced-materials-nano-engineering-2018-posters

11 / 31

Page 63
Volume 4
December 10-12, 2018
Rome, Italy
Nano Research & Applications
ISSN: 2471-9838
Advanced Materials 2018
Nano Engineering 2018
JOINT EVENT
22nd International Conference on
Advanced Materials
and Simulation
&
22 nd Edition of International Conference on
Nano Engineering &
Technology
C obalt ferrite nanoparticles CoFe2O4 and their carbon based
and /or NT nanocomposites : CoFe2O4-CoCO3 , CoFe2O4-
CoCO3/NT have been successfully synthesized by a simple one
stephydrothermalmethod, usingNaOH, andureasurfactants. The
X-ray diffraction confirms the presence of cobalt ferrite and cobalt
ferrite-carbonate phases, the SEM and TEM analyzes reveals
the nanosized particles. The electrochemical performances of
these products were investigated by cyclic voltammetry, charge–
discharge and electrochemical impedance spectroscopy in 6M
KOHaqueous electrolyte, ina three-electrode system. Amaximum
specific capacitances (capacities) of 246 F.g-1 (27 mAh.g-1), 285
F.g-1 (31 mAh.g-1) and 277 F.g-1 (30 mAh.g-1) were obtained
respectively for CoFe2O4 , CoFe2O4-CO3 and CoFe2O4-CoCO3/
NT at a current density of 0,5 A/g. The Cobalt ferrite-carbonate
shows an excellent capacitance retention of 97,8% after 1000
cycles at a current density of 5A/g.
Recent Publications
1. O. Guellati, A. Harat, D. Momodu, J. Dangbegnon,
T. Romero, D. Begin, C. Pham-Huu, N. Manyala,
M. Guerioune (Electrochemical measurements of
1D/2D/3DNi-Co bi-phase mesoporous nanohybrids
synthesized using free-template hydrothermal method)
Electrochimica Acta 275 (2018) 155-171, doi: 10.1016/j.
electacta.2018.04.112.
2. H. Kennaz, A. Harat, O. Guellati, D. Y.Momodu, F. Barzegar,
J. K. Dangbegnon, N. Manyala and M. Guerioune
(Synthesis and electrochemical investigation of spinel
Cobalt ferrite magnetic nanoparticles for supercapacitor
application) Journal of Solid State Electrochemistry 22
(3) (2018), 835-847,
017-3813-y
3. T. M. Masikhwa, M. J Madito, D. Y Momodu, J. K.
Dangbegnon, O. Guellati, A. Harat, M. Guerioune, F.
Barzegar, N. Manyala (High performance asymmetric
supercapacitor based on CoAl-LDH/GF and activated
carbon from expanded graphite) RSC Advances 6 (52),
(2016), 46723-46732.
4. Farshad Barzegar, Abdulhakeem Bello, Ouanassa
Guellati, Damilola Y. Momodu, Aicha Harat, Julien K.
Dangbegnon, Mohamed Guerioune, Ncholu Manyala,
(Effect of addition of different carbon materials on
hydrogel derived carbon material for high performance
electrochemical capacitors) Electrochimica Acta 186
(2015), 277-284.
5. FChouit, OGuellati, SBoukhezar, AHarat, MGuerioune, N
Badi (Synthesis and characterization of HDPE/N-MWNT
nanocomposite films) Nanoscale research letters 9 (1),
(2014) 1.
Biography
Dr. Aicha Harat is a teacher-researcher and head of a team research on LE-
REC laboratory (University of Annaba, Algeria). Her principal research topic
is magnetic and high Tc superconducting materials. Now she deals with
magnetic nanoparticles and their carbon based nanocomposites synthe-
sized by various methods (co-precipitation, hydrothermal, combustion…)
and their application in supercapacitors for energy storage.
0002-1748-9290 )
/
Aicha Harat
Dr, LEREC Laboratory, Physics Department, Badji Mokhtar-Annaba University, BP.12, Annaba
23000, Algeria
O. Guellati, H. Kennaz, and M. Guerioune, LEREC Laboratory, Physics Department, Badji Mokhtar-
Annaba University, BP.12, Annaba 23000, AlgeriaN. Manyala, Department of Physics, Institute
of Applied Materials, SARCHI Chair in Carbon Technology and Materials, University of Pretoria,
Pretoria 0028, South Africa
Aicha Harat, Nano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C7-028
Electrochemical Capacitive Behaviour of Carbon
based and /or NT-CoFe2O4 Nanocomposites