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Ta2O5 nanoparticles as an anode material for lithium ion battery

Ta 2 O 5 is one of the promising anode materials for lithium ion battery application undergoing conversion reaction in combination with an extrinsic pseudocapacitance property. We have synthesized Ta 2 O 5 nanoparticles by hydrothermal method using and without using polyethylene glycol (PEG) as co-s...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2020-04, Vol.24 (4), p.1067-1074
Main Authors: Manukumar, K. N., Kishore, Brij, Viswanatha, R., Nagaraju, G.
Format: Article
Language:English
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Summary:Ta 2 O 5 is one of the promising anode materials for lithium ion battery application undergoing conversion reaction in combination with an extrinsic pseudocapacitance property. We have synthesized Ta 2 O 5 nanoparticles by hydrothermal method using and without using polyethylene glycol (PEG) as co-solvent. Ta 2 O 5 nanoparticles were characterized by PXRD, SEM, EDAX, BET, and TEM analysis. Electrochemical characterizations like Cyclic voltammetry, galvanostatic charge-discharge process, and rate capability were studied for Ta 2 O 5 NPs. A reversible capability of 130 mA h g −1 is retained after 85 cycles at 0.1C rate by Ta 2 O 5 NPs synthesized using PEG, and reversible capability of 127 mA h g −1 is retained after 40 cycles at 0.1C rate by Ta 2 O 5 NPs synthesized without using PEG. Polyethylene glycol as cosolvent induced enhanced porosity favoring the fast lithium ion transport and better reversible capacity upon cycling.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-020-04593-3