Facile solvothermal synthesis of NiFe2O4 nanoparticles for high-performance supercapacitor applications
We report a green and facile approach for the synthesis of NiFe 2 O 4 (NF) nanoparticles with good crystallinity. The prepared materials are studied by various techniques in order to know their phase structure, crystallinity, morphology and elemental state. The BET analysis revealed a high surface a...
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Veröffentlicht in: | Frontiers of materials science 2020-06, Vol.14 (2), p.120-132 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We report a green and facile approach for the synthesis of NiFe
2
O
4
(NF) nanoparticles with good crystallinity. The prepared materials are studied by various techniques in order to know their phase structure, crystallinity, morphology and elemental state. The BET analysis revealed a high surface area of 80.0 m
2
·g
−1
for NF possessing a high pore volume of 0.54 cm
3
·g
−1
, also contributing to the amelioration of the electrochemical performance. The NF sample is studied for its application in supercapacitors in an aqueous 2 mol·L
−1
KOH electrolyte. Electrochemical properties are studied both in the three-electrode method and in a symmetrical supercapacitor cell. Results show a high specific capacitance of 478.0 F·g
−1
from the CV curve at an applied scan rate of 5 mV·s
−1
and 368.0 F·g
−1
from the GCD analysis at a current density of 1 A·g
−1
for the NF electrode. Further, the material exhibited an 88% retention of its specific capacitance after continuous 10000 cycles at a higher applied current density of 8 A·g
−1
. These encouraging properties of NF nanoparticles suggest the practical applicability in high-performance supercapacitors. |
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ISSN: | 2095-025X 2095-0268 |
DOI: | 10.1007/s11706-020-0499-3 |