Structural characteristics of lithium nickel phosphate studied using analytical electron microscopy and raman spectroscopy

C. V. Ramana, A. Ait-Salah, S. Utsunomiya, U. Backer, A. Mauger, F. Gendron, C. M. Julien

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61 Citations (Scopus)

Abstract

The structural characteristics of lithium nickel phosphate (LiNiPO 4) prepared by solid-state chemical reaction have been studied in detail using the analytical electron microscopy and Raman spectroscopy measurements. The high-resolution transmission electron microscopy and selected area electron diffraction measurements indicate that the grown LiNiPO 4 is well-crystallized in olivine structure without any indication of crystallographic defects such as dislocations or misfits. The energy-dispersive X-ray spectrometry coupled with the elemental compositional mapping using high-angle angular dark field scanning electron microscopy confirms the chemical quality of the grown LiNiPO 4 in terms of homogeneity and uniform elemental distribution characteristics. The local structure and chemical bonding between NiO 6 octahedral and (PO 4) 3- tetrahedral groups probed by Raman spectroscopy also indicate the high-quality of LiNiPO 4. Structural analysis of the delithiated Li 0.09NiPO 4 phase indicates lattice contraction and distortion upon lithium extraction. A detailed analysis and comparison of the pristine and delithiated phases is also reported.

Original languageEnglish
Pages (from-to)3788-3794
Number of pages7
JournalChemistry of Materials
Volume18
Issue number16
DOIs
Publication statusPublished - Aug 8 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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