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Issue 12, 2019
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Electrical and electrochemical properties of Li2M(WO4)2 (M = Ni, Co and Cu) compounds

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Abstract

Li2M(WO4)2 (M = Co, Cu or Ni) materials have been synthesized using the solid-state reaction method. X-ray diffraction measurements confirmed the single phase of the synthesized compounds in the triclinic crystal system (space group P[1 with combining macron]). The SEM analyses revealed nearly spherical morphology with the particle size in the range of 1–10 μm. The IR spectra confirm the presence of all modes of WO42−. The impedance spectroscopy measurements showed the presence of grain boundaries and allow determination of the conductivity of the synthesized materials at room temperature. As positive electrode materials for lithium ion batteries, Li2M(WO4)2 (M = Co, Cu or Ni) cathode materials deliver initial discharge capacities of 31, 33 and 30 mA h g−1 for cobalt, nickel, and copper, respectively.

Graphical abstract: Electrical and electrochemical properties of Li2M(WO4)2 (M = Ni, Co and Cu) compounds

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Article information


Submitted
15 Dec 2018
Accepted
16 Feb 2019
First published
27 Feb 2019

This article is Open Access

RSC Adv., 2019,9, 6785-6792
Article type
Paper

Electrical and electrochemical properties of Li2M(WO4)2 (M = Ni, Co and Cu) compounds

K. Karoui, A. Mahmoud, A. Ben Rhaiem and F. Boschini, RSC Adv., 2019, 9, 6785
DOI: 10.1039/C8RA10306B

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    [Original citation] - Published by The Royal Society of Chemistry.

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