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arXiv · 1406.3985

Lithium Diffusion & Magnetism in Battery Cathode Material LixNi1/3Co1/3Mn1/3O2

M. Mansson·H. Nozaki·J. M. Wikberg·K. Prsa·Y. Sassa·M. Dahbi·K. Kamazawa·K. Sedlak·I. Watanabe·J. Sugiyama
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Abstract

We have studied low-temperature magnetic properties as well as high-temperature lithium ion diffusion in the battery cathode materials LixNi1/3Co1/3Mn1/3O2 by the use of muon spin rotation/relaxation. Our data reveal that the samples enter into a 2D spin-glass state below TSG=12 K. We further show that lithium diffusion channels become active for T>Tdiff=125 K where the Li-ion hopping-rate [nu(T)] starts to increase exponentially. Further, nu(T) is found to fit very well to an Arrhenius type equation and the activation energy for the diffusion process is extracted as Ea=100 meV.

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M. Mansson, H. Nozaki, J. M. Wikberg, K. Prsa, Y. Sassa, M. Dahbi, K. Kamazawa, K. Sedlak, I. Watanabe, J. Sugiyama. 2014-06-16. Lithium Diffusion & Magnetism in Battery Cathode Material LixNi1/3Co1/3Mn1/3O2. https://doi.org/10.1088/1742-6596/551/1/012037

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