The temperature influence on the diffusion coefficient for Li in graphite was investigated. The activation energy for Li diffusion in graphite was calculated to be 35kJ/mol.

Temperature Effect on the Lithium Diffusion Rate in Graphite. T.L.Kulova, A.M.Skundin, E.A.Nizhnikovskii, A.V.Fesenko: Russian Journal of Electrochemistry, 2006, 42[3], 259-62