A facile synthesis of raspberry-shaped Fe3O4 nanoaggregate and its magnetic and lithium-ion storage properties

[Display omitted] •Pure Fe3O4 nanoparticles are synthesized by hydrazine reduction with a high yield.•Aggregates of Fe3O4 nanoparticles shows raspberry-shaped morphology.•Raspberry-shaped Fe3O4 was evaluated for magnetic and energy storage applications.•Fe3O4/MWCNT composite shows excellent electroc...

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Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2022-08, Vol.282, p.115771, Article 115771
Main Authors: Ranjan Sahu, Sumit, Jagannatham, M., Gautam, Ravi, Rao Rikka, Vallabha, Prakash, Raju, Mallikarjunaiah, K.J., Srinivas Reddy, G.
Format: Article
Language:English
Subjects:
Aggregates
Chemical synthesis
Coercivity
Electrochemical properties
Energy storage
Hydrazines
Ion storage
Iron oxides
Lithium-ion batteries
Magnetic materials
Magnetic properties
Magnetic saturation
Multi wall carbon nanotubes
Nanoparticles
Oxides
Rechargeable batteries
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Summary:[Display omitted] •Pure Fe3O4 nanoparticles are synthesized by hydrazine reduction with a high yield.•Aggregates of Fe3O4 nanoparticles shows raspberry-shaped morphology.•Raspberry-shaped Fe3O4 was evaluated for magnetic and energy storage applications.•Fe3O4/MWCNT composite shows excellent electrochemical properties. Raspberry-shaped aggregates of Fe3O4 nanoparticles are synthesized via a facile hydrazine reduction method with high purity and good yield. The size of the Fe3O4 nanoparticles is in the range of 20–50 nm, which joins together to form raspberry-shaped secondary aggregates. In the absence of hydrazine, only Fe2O3 nanoparticles are formed. The Fe3O4 shows superparamagnetic behavior along with the coercivity and saturation magnetization value of 480 Oe and 41 emu/g at 5 K. The Fe3O4 aggregates show good lithium-ion storage capability with a combination of multi-walled carbon nanotubes. The electrode maintains a high reversible capacity of 662 mAhg−1 after 100 cycles at 50 mAg−1. Therefore, this can be a promising material for magnetic and lithium-ion battery applications.
ISSN:0921-5107
1873-4944
DOI:10.1016/j.mseb.2022.115771