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Electrochemical behavior of LiNi1-y-zCoyMnzO2 probed through structural and magnetic properties
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
LCME, FST Marrakech, University Cadi Ayyad, Marocko.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
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2012 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 111, no 2, 023904- p.Article in journal (Refereed) Published
Abstract [en]

We have investigated LixNi1-y-zCoyMnzO2 compounds with y = 1/3, 0.25, 0.2, 0.1 and z = 1/3, 0.2, 0.1, 0.05 in order to study the influence of Ni and Mn concentration, cationic disorder, and crystallite size on the magnetic and charge/discharge behavior. The samples have been studied by means of x-ray diffraction, scanning electron microscopy, voltammetry, cycling capacity, and magnetometry. The discharge capacity increases with increasing Ni concentration as does the number of ferromagnetic interactions. With higher Mn concentration a higher capacity is observed together with formation of strong antiferromagnetic interactions driving the magnetic frustration to lower temperatures. Our results show that for sufficiently low Co concentrations a stable and magnetically more ordered structure can be obtained with excellent electrochemical properties, although a relatively large amount of Ni is present.

Place, publisher, year, edition, pages
2012. Vol. 111, no 2, 023904- p.
National Category
Physical Sciences Engineering and Technology Inorganic Chemistry
Research subject
Engineering Science with specialization in Solid State Physics; Chemistry with specialization in Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-169969DOI: 10.1063/1.3676434ISI: 000299792400049OAI: oai:DiVA.org:uu-169969DiVA: diva2:508359
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Available from: 2012-03-08 Created: 2012-03-07 Last updated: 2017-12-07Bibliographically approved

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Dahbi, MohammedWikberg, J. MagnusGustafsson, TorbjörnSvedlindh, PeterEdström, Kristina

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