Spectroscopic and chemical imaging analysis of lithium iron triphosphate

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

Research output: Contribution to journalArticle

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Abstract

A novel material, namely, Fe-containing lithium-metal triphosphate (LiM2P3O10; M=Fe), has been synthesized by wet-chemical method. The phase shows the monoclinic structure (P2 1/m≡C2h2)- The crystal chemistry and chemical structural characteristics have been analyzed by X-ray-diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM). Surface chemical composition, valence state, and chemical bonding and local structure analysis have been performed by X-ray photoelectron (XPS) and Raman scattering (RS) spectroscopy. EDS and HAADF-STEM indicate the chemical homogeneity and purity of LiFe2P3O10 samples. Both XPS and RS experiments show the existence of an amorphous carbon deposit at the surface of the LiFe2P3O10 particles. Comparison between XPS results for LiFePO4 olivine and LiFe2P 3O10 revealed the change in the binding energy of Fe(II) ions. Studies of the local structure characterized by Raman scattering show the evolution of the chemical bonding with the increased number of interconnected PO4 oxo-anionic groups. The electrochemical characteristics of LiFe2P3O10 demonstrate their applicability in lithium batteries.

Original languageEnglish
Pages (from-to)1049-1054
Number of pages6
JournalJournal of Physical Chemistry C
Volume111
Issue number2
DOIs
Publication statusPublished - Jan 18 2007
Externally publishedYes

Fingerprint

Lithium
Iron
lithium
Imaging techniques
iron
Raman scattering
Raman spectra
X ray photoelectron spectroscopy
Energy dispersive spectroscopy
transmission electron microscopy
scanning electron microscopy
x rays
lithium batteries
Crystal chemistry
Transmission electron microscopy
Olivine
Scanning electron microscopy
Lithium batteries
olivine
Amorphous carbon

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Ramana, C. V., Ait-Salah, A., Utsunomiya, S., Morhange, J. F., Mauger, A., Gendron, F., & Julien, C. M. (2007). Spectroscopic and chemical imaging analysis of lithium iron triphosphate. Journal of Physical Chemistry C, 111(2), 1049-1054. https://doi.org/10.1021/jp065072c

Spectroscopic and chemical imaging analysis of lithium iron triphosphate. / Ramana, C. V.; Ait-Salah, A.; Utsunomiya, S.; Morhange, J. F.; Mauger, A.; Gendron, F.; Julien, C. M.

In: Journal of Physical Chemistry C, Vol. 111, No. 2, 18.01.2007, p. 1049-1054.

Research output: Contribution to journalArticle

Ramana, CV, Ait-Salah, A, Utsunomiya, S, Morhange, JF, Mauger, A, Gendron, F & Julien, CM 2007, 'Spectroscopic and chemical imaging analysis of lithium iron triphosphate', Journal of Physical Chemistry C, vol. 111, no. 2, pp. 1049-1054. https://doi.org/10.1021/jp065072c
Ramana, C. V. ; Ait-Salah, A. ; Utsunomiya, S. ; Morhange, J. F. ; Mauger, A. ; Gendron, F. ; Julien, C. M. / Spectroscopic and chemical imaging analysis of lithium iron triphosphate. In: Journal of Physical Chemistry C. 2007 ; Vol. 111, No. 2. pp. 1049-1054.
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