Structural analysis of lanthanum-containing battery materials using 139La solid-state NMR

139 La solid-state NMR spectra, acquired at 21.1 and 11.7 T, have been used to evaluate the structural properties of the lithium ion battery materials, La 32 Li 16 Fe 6.4 O 67 and Li 3x La 2/3–x TiO 3 . In particular, atomic-level disorder in the second coordination sphere environment of lanthanum in these materials has been indicated by the observation of a distribution in the asymmetry parameters and the quadrupolar coupling constants derived …