Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/22478
Title: 
Authors: 
Subjects: 
CoFe2O4
Molten salt synthesis
Lithium batteries
Anode
Ex-situ XRD
Ex-situ TEM
Impedance spectroscopy
Issue Date: 
2020
Citation: 
Kulkarni, P., Balkrishna, R. G., Ghosh, D., Rawat, R. S., Medwal, R., Chowdari, B. V. R., Karim, Z., & Reddy, M. V. (2020). Molten salt synthesis of CoFe2O4 and its energy storage properties. Materials Chemistry and Physics, 123747. https://doi.org/10.1016/j.matchemphys.2020.123747
Abstract: 
In this article, we report simple and scalable one-pot molten salt synthesis of CoFe2O4 as electrode material for Lithium ion batteries. X-ray diffraction studies along with Rietveld analysis showed a pure phase of CoFe2O4 with space group Fd-3m and crystallite size of 54 nm. As an anode material CoFe2O4 showed high initial discharge/charge capacity of 1556/1093 mA h g−1 and a reversible capacity of 926 mA h g−1 after 30 cycles with columbic efficiency of 99%. A relatively high reversible capacity of 594 mA h g−1 was observed at high current density of 1C (916 mA g−1) which shows the better reversibility of CoFe2O4 at high current density. As the current was reduced to 0.1C reversible capacity of 899 mA h g−1 was retained suggesting high rate performance of CoFe2O4. The long-term stability test, carried out using galvanostatic charge/discharge (GC) at a current density of 0.5C, showed a reversible capacity of 369 mA h g−1 at the end of 200th cycle. The structural and morphological evaluation of the sample after cycling, using ex-situ X-ray diffraction and ex-situ transmission electron microscopy, confirmed structural degradation and formation of metal nanoparticles, Li2O and amorphous nature of electrode material. The one-pot molten salt synthesis approach is quite simple and can be extended for large-scale production of electrode materials.
Description: 
This is the final draft, after peer-review, of a manuscript / book chapter published in Materials Chemistry and Physics. The published version is available online at [link to published version on journal’s website and use the https://doi.org/10.1016/j.matchemphys.2020.123747
URI: 
ISSN: 
0254-0584 (print)
DOI: 
Grant ID: 
NIE AcRF Grant RI 4/16 RSR
DST Nanomission Ref. No: SR/ NM/NS-20/2014
Funding Agency: 
National Institute of Education, Singapore
File Permission: 
Embargo_20230201
File Availability: 
With file
Appears in Collections:Journal Articles

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  Until 2023-02-01
2.14 MBAdobe PDFUnder embargo until Feb 01, 2023
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