کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5460184 | 1516193 | 2017 | 6 صفحه PDF | دانلود رایگان |

- Superparamagnetic Mn0.8Ni0.2Fe2O4 nanoplates with plate-length of 8Â nm were fabricated.
- Structural analysis confirmed the crystalline plate-like morphology of the samples.
- Magnetic studies confirmed superparamagnetism with blocking temperature of 90Â K.
- Electrochemical study revealed better discharge-charge capacities with best efficiency.
Nanoplates of nickel-substituted manganese ferrite (M0.8Ni0.2Fe2O4) with side-length of 8 ± 2 nm were fabricated by coprecipitation route. The samples were characterized by X-ray powder diffraction, transmission electron microscopy, and Raman spectroscopy, which confirmed the formation of single phase crystalline nanoparticles with plate-like morphologies. Magnetic properties were investigated by vibrating sample magnetometer at room temperature and by zero-field cooled (ZFC) and field cooled (FC) M(T) measurements in the temperature range 20-300 K, which revealed the superparamagnetic nature of the samples with blocking temperature of about 90 K. Benefited from the plate-like morphology of the samples, the electrochemical performance was tested in lithium ion batteries, which shows the initial discharge and charge capacities of â¼1050 mAhgâ1 and â¼900 mAhgâ1 for the first cycle and excellent coulombic efficiency of higher than 95% after the ten subsequent cycles. This work demonstrates the possibility of using plate-like M0.8Ni0.2Fe2O4 nanoparticles as the anode materials for lithium-ion batteries.
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Journal: Journal of Alloys and Compounds - Volume 701, 15 April 2017, Pages 147-152