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

• Autorzy: Chennakrishnan Sandhiya , Thangamuthu Venkatachalam , Subramaniyam Akshaya , Venkatachalam Viknesh , Venugopal Manikandan , Marudhan Raju

Identyfikatory

DOI

10.2478/msp-2020-0026

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

Li2MnO3; sol-gel; monoclinic structure; TGA; DTA; XRD; EDAX; Li-ion battery; cyclic voltammetry

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2020
• Tom: Vol. 38, No. 2
• Strony: 312--319
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Chennakrishnan Sandhiya

• Department of Physics, Coimbatore Institute of Technology, Coimbatore-641014, India Subramaniyam, Akshaya

autor

Thangamuthu Venkatachalam

• Department of Physics, Coimbatore Institute of Technology, Coimbatore-641014, India Subramaniyam, Akshaya

autor

Subramaniyam Akshaya

• Department of Physics, Coimbatore Institute of Technology, Coimbatore-641014, India Subramaniyam, Akshaya

autor

Venkatachalam Viknesh

• Department of Electrical and Electronic Engineering, Coimbatore Institute of Technology, Coimbatore-641014, India

autor

Venugopal Manikandan

• Department of Electrical and Electronic Engineering, Coimbatore Institute of Technology, Coimbatore-641014, India

autor

Marudhan Raju

• Electro chemical Power Source Division, Central electro chemical Research Institute, Karaikudi- 630003, India

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