Skip to Main content Skip to Navigation
Journal articles

Magnetic studies of phospho-olivine electrodes in relation with their electrochemical performance in Li-ion batteries

Abstract : Currently, LiFePO4 is considered a good candidate as a positive electrode in rechargeable lithium-ion batteries for hybrid-electric vehicle (HEV) applications. A major difficulty with the preparation of the olivine structure (LiFePO4) comes from the existence of two oxidation states of iron, namely Fe(II) and Fe (III). Careful control of the synthesis procedure is needed to avoid any impurity which can poison the electrochemistry of LiFePO4 electrodes in Li-ion batteries. Analysis of the structure and morphology of the phospho-olivine LiFePO4 is presented as a function of the synthetic conditions. The combination of analytical methods, i.e. magnetization, M(H), susceptibility, χm(T), and Raman scattering spectroscopy, appears to be a powerful tool for the detection of small amount of impurities. The electrochemical performance of optimized LiFePO is evaluated in LiTiO/LiPF-EC-DEC/C-LiFePO cells operating at high temperature (60 °C).
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-00340563
Contributor : Danielle Thomas Connect in order to contact the contributor
Submitted on : Friday, November 21, 2008 - 11:20:39 AM
Last modification on : Friday, March 27, 2020 - 2:57:22 AM

Identifiers

Citation

K. Zaghib, A. Mauger, F. Gendron, C.M. Julien. Magnetic studies of phospho-olivine electrodes in relation with their electrochemical performance in Li-ion batteries. Solid State Ionics, Elsevier, 2008, 179, pp.16-23. ⟨10.1016/j.ssi.2007.12.071⟩. ⟨hal-00340563⟩

Share

Metrics

Record views

326