Lithium Diffusion & Magnetism in Battery Cathode Material   LixNi1/3Co1/3Mn1/3O2
  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. 
M. Mansson, H. Nozaki, J. M. Wikberg, K. Prsa, Y. Sassa, M. Dahbi, K.   Kamazawa, K. Sedlak, I. Watanabe, J. Sugiyama
cond-mat.mtrl-sci