A review on LiNixCo1-2xMnxO2(0.1 = x = 0.33) cathode materials for rechargeable Li-ion batteries


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Publication Details

Output type: Conference proceeding

UM6P affiliated Publication?: Yes

Author list: Labrini M., El Haskouri J., Almaggoussi A., Saadoune I.

Editor list: Labrini, M., El Haskouri, J., Almaggoussi, A., Saadoune, I.

Publisher: Elsevier

Publication year: 2021

Journal: Materials Today: Proceedings (2214-7853)

Volume number: 37

Start page: 3921

End page: 3927

Number of pages: 7

ISSN: 2214-7853

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101932145&doi=10.1016%2fj.matpr.2020.08.752&partnerID=40&md5=e0e579ff09a75410e49a67bcd8f0fc97

Languages: English (EN-GB)


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Abstract

Electrochemical and physical properties of LiNixCo1-2xMnxO2 (0.1 = x = 0.33) electrode materials prepared by self-combustion were investigated. Pure LiNixCo1-2xMnxO2 (x = 0.1, 0.2, 0.33) materials with single phase and R-3 m layered structure were obtained as confirmed by X-ray diffraction. Energy Dispersive Spectroscopy, Scanning Electron Microscopy are commonly used to determine the chemical composition and the distribution of particle size of the three samples. The electrochemical performances of the samples were measured at different current rates in the 3-4.5 V potential range. The studied materials exhibit good discharge capacity. The magnetic susceptibility measurements and conventional electronic paramagnetic resonance spectroscopy (EPR, 9.23 GHz) are coupled to probe the valence state of the transition metal ions and to understand their distributions via their magnetic interactions. X-band EPR spectroscopy has been used to study the local environment in the layered LiNixCo1-2xMnxO2. It has been demonstrated that both Ni2+ and Mn4+ ions are paramagnetic while Co3+ exhibits a diamagnetic low-spin configuration in the starting material. © 2020 Elsevier Ltd. All rights reserved.


Keywords

Electrochemical measurements, energy storage, EPR spectroscopy, Layered compounds, NMC


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Last updated on 2021-25-11 at 23:16