Lattice vibrations of manganese oxides. I. Periodic structures

Christian Julien (1) , M. Massot , C. Poinsignon

1 LMDH - Laboratoire des Milieux Désordonnés et Hétérogènes

Raman scattering (RS) and Fourier transform–infrared (FT–IR) spectroscopy have been applied to the structural characterisation of manganese dioxides (MDOs). A variety of synthetic battery-grade MDOs are investigated for comparison to the natural phases. The RS and FT–IR spectra are analysed on the basis of the local environment in the MDO structures considering the vibrations of the MnO6 octahedral building the lattices. The vibrational modes of the MnO6 units expand over 400–650 cm−l with additional bands in the low-wavelength region. Structural trends are deduced from the comparison of the vibrational spectra of the MDO phases investigated: birnessite, bixbyite, coronadite, groutite, hausmannite, hollandite, manganosite, pyrolusite, ramsdellite, romanechite, spinel, and todorokite.

Mots clés: Manganese oxides; Lattice dynamics; Raman spectroscopy; FT–IR spectroscopy; Lithium batteries

Christian Julien, M. Massot, C. Poinsignon. Lattice vibrations of manganese oxides. I. Periodic structures. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-..], 2004, 60 (3), pp.689. ⟨hal-00017142⟩