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Sol-Gel Synthesis and Characterization of Nanocrystalline Spinel LiMn<sub>2</sub>O<sub>4</sub> For Battery Applications
Author(s) -
Yalambaku Rajesh,
R.S. Dubey
Publication year - 2013
Publication title -
nanoscience and nanoengineering
Language(s) - English
Resource type - Journals
eISSN - 2331-9747
pISSN - 2331-9755
DOI - 10.13189/nn.2013.010303
Subject(s) - nanocrystalline material , spinel , characterization (materials science) , materials science , sol gel , battery (electricity) , chemical engineering , nanotechnology , metallurgy , engineering , physics , power (physics) , quantum mechanics
Nanocrystalline spinel LiMn2O4 was synthesized by sol-gel method using aqueous solution of metal acetates (LiOAc·H2O, Mn(CH3COO)2.4H2O) and citric acid as chelating agent. X-ray diffraction measurement showed the peaks at 2θ values corresponding to (111), (311), (222), (400), (331) and (440) planes of cubic spinel LiMn2O4 nanoparticles with average size ~25 nm. FT IR shows all the characteristic peaks of the cubic spinel. TG/DTA measurement showed the weight loss between 100-250 0 C and 300-500 0 C which correspond the endothermic and exothermic processes. An exothermic peak observed at around 400 0 C is due to the thermal decomposition of the ingredients to form LiMn2O4. FE-SEM measurement revealed the formation of small polycrystalline particles of almost spherical morphology with size between 20-30 nm.

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