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

doi:10.1021/jp065072c

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

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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≡C_2h²)- 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 language	English
Pages (from-to)	1049-1054
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	2
DOIs	https://doi.org/10.1021/jp065072c
Publication status	Published - Jan 18 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

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title = "Spectroscopic and chemical imaging analysis of lithium iron triphosphate",

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.",

author = "Ramana, {C. V.} and A. Ait-Salah and S. Utsunomiya and Morhange, {J. F.} and A. Mauger and F. Gendron and Julien, {C. M.}",

year = "2007",

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doi = "10.1021/jp065072c",

language = "English",

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T1 - Spectroscopic and chemical imaging analysis of lithium iron triphosphate

AU - Ramana, C. V.

AU - Ait-Salah, A.

AU - Utsunomiya, S.

AU - Morhange, J. F.

AU - Mauger, A.

AU - Gendron, F.

AU - Julien, C. M.

PY - 2007/1/18

Y1 - 2007/1/18

N2 - 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.

AB - 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.

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Spectroscopic and chemical imaging analysis of lithium iron triphosphate

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