Raman Spectroscopy of LiFePO_4 and Li_3V_2(PO_4)_3 Prepared as Cathode Materials

• Authors: D. Ziółkowska , K. Korona , M. Kamińska , E. Grzanka , M. Andrzejczuk , S. Wu , M. Chen
• Languages of publication: EN

Abstracts

EN

Structure of samples of lithium iron vanadium phosphates of different compositions were investigated by X-rays, electron microscopy and Raman spectroscopy. The investigated salts were mainly of olivine-like and NASICON-like structures. The X-ray diffraction and the Raman scattering show different crystalline structures, which is probably caused by difference between cores of the crystallites (probed by X-rays) and their shells (probed by the Raman scattering). Most of the Raman spectra were identified with previously published data, however in the samples with high vanadium concentration we have observed new, not reported earlier modes at 835 cm^{-1} and 877 cm^{-1}, that we identified as oscillations related to V_2O_7^{4-} or VO_4^{3-} anions.

Keywords

EN

78.30.Hv; 82.80.Gk; 82.47.Aa

Discipline

• 82.80.Gk: Analytical methods involving vibrational spectroscopy
• 82.47.Aa: Lithium-ion batteries
• 78.30.Hv: Other nonmetallic inorganics

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 120
• Issue: 5
• Pages: 973-975

Dates

published

2011-11

Contributors

author

D. Ziółkowska

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

K. Korona

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

M. Kamińska

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

E. Grzanka

• Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

author

M. Andrzejczuk

• Faculty of Materials Science and Eng., Warsaw Univ. of Technology, Wołoska 141, 02-507 Warsaw, Poland

author

S. Wu

• Department of Materials Engineering, Tatung University, Taipei, Taiwan

author

M. Chen

• Department of Materials Engineering, Tatung University, Taipei, Taiwan

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Identifiers

DOI

10.12693/APhysPolA.120.973