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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Study of the surface modification of LiNi
1/3
Co
1/3
Mn
1/3
O
2
cathode material for lithium ion battery
Journal of Power Sources, Volume 196, No. 20, Year 2011
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Description
The surface of LiNi1/3Co1/3Mn1/3O 2 (LNMCO) particles has been studied for material synthesized at 900 °C by a two-step process from a mixture of LiOH·H2O and metal oxalate [(Ni1/3Co1/3Mn1/3)C 2O4] obtained by co-precipitation. Samples have been characterized by X-ray diffraction (XRD), high-resolution transmission electron microscope (HRTEM), Raman scattering (RS) spectroscopy, and magnetic measurements. We have investigated the effect of the heat treatment of particles at 600 °C with organic substances such as sucrose and starch. HRTEM images and RS spectra indicate that the surface of particles has been modified. The annealing does not lead to any carbon coating but it leads to the crystallization of the thin disordered layer on the surface of LiNi 1/3Co1/3Mn1/3O2. The beneficial effect has been tested on the electrochemical properties of the LiNi 1/3Co1/3Mn1/3O2 cathode materials. The capacity at 10C-rate is enhanced by 20% for post-treated LNMCO particles at 600 °C for half-an-hour. © 2011 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Hashem, Ahmed M.A.
Egypt, Giza
National Research Centre
Abdel-Ghany, Ashraf E.
Egypt, Giza
National Research Centre
Eid, Ali E.A.
Egypt, Giza
National Research Centre
Trottier, J.
Canada, Montreal
Hydro-québec
Zaghib, Karim
Canada, Montreal
Hydro-québec
Mauger, Alain
France, Paris
Sorbonne Université
Julien, Christian M.
France, Paris
Sorbonne Université
Statistics
Citations: 119
Authors: 7
Affiliations: 3
Identifiers
Doi:
10.1016/j.jpowsour.2011.06.039
ISSN:
03787753
Research Areas
Environmental