<abstract xmlns="http://www.w3.org/1999/xhtml">Nanoparticles of Li2MnO3 were fabricated by sol-gel method using precursors of lithium acetate and manganese acetate, and citric acid as chelating agent in the stoichiometric ratio. TGA/DTA measurements of the sample in the regions of 30 °C to 176 °C, 176 °C to 422 °C and 422 °C to 462 °C were taken to identify the decomposition temperature and weight loss. The XRD analysis of the sample indicates that the synthesized material is monoclinic crystalline in nature and the calculated lattice parameters are 4.928 Å (a), 8.533 Å (b), and 9.604 Å (c). The surface morphology, particle size and elemental analysis of the samples were observed using SEM and EDAX techniques and the results confirmed the agglomeration of nanoparticles and, as expected, Li2MnO3 composition. Half cells of Li2MnO3 were assembled and tested at C/10 rate and the maximum capacity of 27 mAh/g was obtained. Charging and discharging processes that occurred at 3 V and 4 V were clearly observed from the cyclic voltammetric experiments. Stability of the electrodes was confirmed by the perfect reversibility of the anodic and cathodic peak positions observed in the cyclic voltammogram of the sample. The Li2MnO3 nanoparticles exhibit excellent properties and they are suitable for cathode materials in lithium ion batteries.</abstract>

Nanoparticles of Li2MnO3 were fabricated by sol-gel method using precursors of lithium acetate and manganese acetate, and citric acid as chelating agent in the stoichiometric ratio. TGA/DTA measurements of the sample in the regions of 30 °C to 176 °C, 176 °C to 422 °C and 422 °C to 462 °C were taken to identify the decomposition temperature and weight loss. The XRD analysis of the sample indicates that the synthesized material is monoclinic crystalline in nature and the calculated lattice parameters are 4.928 Å (a), 8.533 Å (b), and 9.604 Å (c). The surface morphology, particle size and elemental analysis of the samples were observed using SEM and EDAX techniques and the results confirmed the agglomeration of nanoparticles and, as expected, Li2MnO3 composition. Half cells of Li2MnO3 were assembled and tested at C/10 rate and the maximum capacity of 27 mAh/g was obtained. Charging and discharging processes that occurred at 3 V and 4 V were clearly observed from the cyclic voltammetric experiments. Stability of the electrodes was confirmed by the perfect reversibility of the anodic and cathodic peak positions observed in the cyclic voltammogram of the sample. The Li2MnO3 nanoparticles exhibit excellent properties and they are suitable for cathode materials in lithium ion batteries.

Synthesis and characterization of Li2MnO3 nanoparticles using sol-gel technique for lithium ion battery

Department of Electrical and Electronic Engineering

Electro chemical Power Source Division, Central electro chemical Research Institute

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Synthesis and characterization of LiMnO nanoparticles using sol-gel technique for lithium ion battery

Nanoparticles of Li2MnO3 were fabricated by sol-gel method using precursors of lithium acetate and manganese acetate, and citric acid as chelating agent in the...

Synthesis and characterization of Li₂MnO₃ nanoparticles using sol-gel technique for lithium ion battery

Online veröffentlicht: 06. Okt. 2020

Seitenbereich: 312 - 319

Eingereicht: 28. Mai 2018

Akzeptiert: 23. Apr. 2019

DOI: https://doi.org/10.2478/msp-2020-0026

Schlüsselwörter
LiMnO, sol-gel, monoclinic structure, TGA, DTA, XRD, EDAX, Li-ion battery, cyclic voltammetry

© 2020 Sandhiya Chennakrishnan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Synthesis and characterization of Li2MnO3 nanoparticles using sol-gel technique for lithium ion battery

Online veröffentlicht: 06. Okt. 2020

Seitenbereich: 312 - 319

Eingereicht: 28. Mai 2018

Akzeptiert: 23. Apr. 2019

DOI: https://doi.org/10.2478/msp-2020-0026

SchlüsselwörterLiMnO, sol-gel, monoclinic structure, TGA, DTA, XRD, EDAX, Li-ion battery, cyclic voltammetry

© 2020 Sandhiya Chennakrishnan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Synthesis and characterization of Li₂MnO₃ nanoparticles using sol-gel technique for lithium ion battery

Schlüsselwörter
LiMnO, sol-gel, monoclinic structure, TGA, DTA, XRD, EDAX, Li-ion battery, cyclic voltammetry