Controlled approach on spinel lithium manganese oxide as possible cathode for high-performance Li-ion supercapacitors

Enormous research activities have been accomplished to evolve improved cathode for advanced Li-ion-based devices. In this article, we account the preparation of spinel LiMn 2 O 4 synthesized by microwave irradiation method and investigated the influence of calcination temperature (550-750°C) on its...

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Bibliographic Details
Published in:Materials technology (New York, N.Y.) N.Y.), 2019-09, Vol.34 (11), p.689-696
Main Authors: Matheswaran, Priyadharshini, Thangavelu, Pazhanivel, Ganapathi, Bharathi
Format: Article
Language:English
Subjects:
a microwave-assisted combustion method
calcination temperature
LiMn
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Summary:Enormous research activities have been accomplished to evolve improved cathode for advanced Li-ion-based devices. In this article, we account the preparation of spinel LiMn 2 O 4 synthesized by microwave irradiation method and investigated the influence of calcination temperature (550-750°C) on its crystallinity, morphology and electrochemical properties. The crystallinity of the samples showed a linear increment with the calcination temperature, and from the structural analysis, the interlinking of the polyhedral subunits with one another was encountered. The electrochemical investigations revealed that the sample calcined at 650°C exhibited a high capacitance of 473.44 F/g in the 3M LiNO 3 electrolyte with stable cycling performance. The obtained results suggested the significance of optimum calcination temperature in the effective tailoring of crystallinity, morphology and electrochemical properties of LiMn 2 O 4 nanoparticles.
ISSN:1066-7857
1753-5557
DOI:10.1080/10667857.2019.1615275