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 language | English |
|---|---|
| Pages (from-to) | 1049-1054 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry C |
| Volume | 111 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 18 2007 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
Cite this
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 journal › Article
}
TY - JOUR
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.
UR - http://www.scopus.com/inward/record.url?scp=33847679667&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847679667&partnerID=8YFLogxK
U2 - 10.1021/jp065072c
DO - 10.1021/jp065072c
M3 - Article
AN - SCOPUS:33847679667
VL - 111
SP - 1049
EP - 1054
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 2
ER -