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Complementary Ion Beam Analysis and Raman Studies for Investigation of the Carbon Coating Impact on Li Insertion/Deinsertion Process at LiFePO$_4$/C Electrodes
- Source :
- Journal of The Electrochemical Society, Journal of The Electrochemical Society, Electrochemical Society, 2017, 164 (14), pp.A3538-A3544. ⟨10.1149/2.0471714jes⟩, Journal of The Electrochemical Society, 2017, 164 (14), pp.A3538-A3544. ⟨10.1149/2.0471714jes⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- International audience; Electrode materials were prepared using two commercial C-LiFePO$_4$ powders (called hereafter LFP-A and LFP-B). The nature and the thickness of carbon coating have been characterized by Raman spectroscopy and Transmission Electron Microscopy. The carbon coating of the LFP-B is more graphitized than LFP-A, which appears amorphous. The lithium distribution of these electrodes is investigated using ion beam techniques as a function of its state of charge (SOC). The nuclear microanalyses reveal the presence of different dopings in the active materials (Ti or V). A layer richer in carbon (in addition to the composite electrode) is systematically observed on LFP-A pristine and cycled electrodes. In both materials, immobilization of lithium is visible. Higher content of lithium was observed for the LFP-B electrode.
- Subjects :
- Materials science
Ion beam
020209 energy
Analytical chemistry
chemistry.chemical_element
02 engineering and technology
symbols.namesake
0202 electrical engineering, electronic engineering, information engineering
Materials Chemistry
Electrochemistry
ComputingMilieux_MISCELLANEOUS
Ion beam analysis
Renewable Energy, Sustainability and the Environment
[CHIM.MATE]Chemical Sciences/Material chemistry
[CHIM.CATA]Chemical Sciences/Catalysis
021001 nanoscience & nanotechnology
Condensed Matter Physics
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Amorphous solid
chemistry
Transmission electron microscopy
Electrode
symbols
Lithium
0210 nano-technology
Raman spectroscopy
Carbon
Subjects
Details
- Language :
- English
- ISSN :
- 00134651 and 19457111
- Database :
- OpenAIRE
- Journal :
- Journal of The Electrochemical Society, Journal of The Electrochemical Society, Electrochemical Society, 2017, 164 (14), pp.A3538-A3544. ⟨10.1149/2.0471714jes⟩, Journal of The Electrochemical Society, 2017, 164 (14), pp.A3538-A3544. ⟨10.1149/2.0471714jes⟩
- Accession number :
- edsair.doi.dedup.....cdde815914fea494df997131f6a72d4a