Improved electrochemical properties of solvothermally synthesized Li2FeSiO4/C nanocomposites: A comparison between solvothermal and sol-gel methods
By Kumar, Ajay; Jayakumar, O. D.; Naik, Vaman M.; Nazri, G. A.; Naik, Ratna
Published in Solid State Ionics
NULL
2016
Abstract
Abstract We have synthesized porous Li2FeSiO4/C nanocomposites by two different routes such as sol-gel (Li2FeSiO4/C-SG) and solvothermal (Li2FeSiO4/C-ST) using block copolymer pluronic (P123) as both in-situ carbon source and structure directing agent. Various techniques, like, powder x-ray diffraction, {BET} nitrogen adsorption-desorption measurement, scanning electron microscopy, transmission electron microscopy, galvanostatic cycling, cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the nanocomposites. A comparative study of their structural, electronic and electrochemical properties show that the solvothermally synthesized nanocomposite sample Li2FeSiO4/C-ST-600 (annealed at 600
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