Characterization of LiFePO4/C Composite and Its Thermal Stability by Mössbauer and XPS Spectroscopy

Physica Status Solidi B 2016
J. Reklaitis, R. Davidonis, Antonija Dindune, Dagnija Valdniece, V. Jasulaitiene, D. Baltrunas

The powders of the LiFePO4/C composite have been synthesized using the sol–gel method. The binding energies of the Fe 2p, P 2p, and O1s core level the of LiFePO4/C surface were determined by X-ray photoelectron spectroscopy (XPS). The deconvolution of the Fe 2p core level XPS is associated with the Fe2+ and Fe3+ valence states of the composite. Chemical composition and phase transitions were investigated using M¨ossbauer spectroscopy in the temperature interval of 10–600 K. Thermal decomposition of the composite was observed at 550 K.

Keywords
ionic materials, M¨ossbauer spectroscopy, sol–gel growth, X-ray photoemission spectroscopy, XPS
DOI
10.1002/pssb.201600028

Reklaitis, J., Davidonis, R., Dindune, A., Valdniece, D., Jasulaitiene, V., Baltrunas, D. Characterization of LiFePO4/C Composite and Its Thermal Stability by Mössbauer and XPS Spectroscopy. Physica Status Solidi B, 2016, Vol.253, Iss.11, pp.2283-2288. e-ISSN 1521-3951. Available from: doi:10.1002/pssb.201600028

Publication language
English (en)