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Besnard, N., Etiemble, A., Douillard, T., Dubrunfaut, O., Tran-Van, P., Gautier, L., Franger, S., Badot, J.-C., Maire, E. & Lestriez, B. (2017) Multiscale Morphological and Electrical Characterization of Charge Transport Limitations to the Power Performance of Positive Electrode Blends for Lithium-Ion Batteries. Adv. Energy Mater. 7 1602239. 
Added by: Richard Baschera (2017-05-05 13:45:22)   Last edited by: Richard Baschera (2017-05-05 13:47:21)
Type de référence: Article
DOI: 10.1002/aenm.201602239
Numéro d'identification (ISBN etc.): 1614-6832
Clé BibTeX: Besnard2017
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Mots-clés: 3-dimensional microstructure, 3d microstructure, carbon-lifepo4 nanocomposites, composite electrodes, Electrochemical properties, graphite particles, ionic and electronic wirings, licoo2 cathode, lifepo4 composite electrodes, Lithium-ion batteries, poly(vinylidene fluoride), Power performance, ray nano-tomography, surface-morphology, X-ray and FIB-SEM tomography
Créateurs: Badot, Besnard, Douillard, Dubrunfaut, Etiemble, Franger, Gautier, Lestriez, Maire, Tran-Van
Collection: Adv. Energy Mater.
Consultations : 7/644
Indice de consultation : 4%
Indice de popularité : 1%
In this work, exhaustive characterizations of 3D geometries of LiNi1/3Mn1/3Co1/3O2 (NMC), LiFePO4 (LFP), and NMC/LFP blended electrodes are undertaken for rational interpretation of their measured electrical properties and electrochemical performance. X-ray tomography and focused ion beam in combination with scanning electron microscopy tomography are used for a multiscale analysis of electrodes 3D geometries. Their multiscale electrical properties are measured by using broadband dielectric spectroscopy. Finally, discharge rate performance are measured and analyzed by simple, yet efficient methods. It allows us to discriminate between electronic and ionic wirings as the performance limiting factors, depending on the discharge rate. This approach is a unique exhaustive analysis of the experimental relationships between the electrochemical behavior, the transport properties within the electrode, and its 3D geometry.
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