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Wilhelm, H. A., Marino, C., Darwiche, A., Soudan, P., Morcrette, M., Monconduit, L. & Lestriez, B. (2015) Engineering study on TiSnSb-based composite negative electrode for Li-ion batteries. J. Power Sources, 274 496–505.
Added by: Laurent Cournède (2016-03-10 18:36:42) |
| Type de référence: Article DOI: 10.1016/j.jpowsour.2014.10.051 Numéro d'identification (ISBN etc.): 0378-7753 Clé BibTeX: Wilhelm2015 Voir tous les détails bibliographiques  |
Catégories: ST2E Mots-clés: Anode, Binder, co3o4, Cyclability, cycle life, Electrochemical performance, Electrode formulation, Formulation, high-capacity, Intermetallic phase, Lithium batteries, Lithium-ion battery, mechanism, Rate performance, TiSnSb Créateurs: Darwiche, Lestriez, Marino, Monconduit, Morcrette, Soudan, Wilhelm Collection: J. Power Sources |
Consultations : 1/551
Indice de consultation : 4% Indice de popularité : 1% |
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Micrometric TiSnSb is a promising negative electrode material for Li-ion batteries when formulated with carboxymethyl cellulose (CMC) binder and a mixture of carbon black and carbon nanofibers, and cycled in a fluoroethylene carbonate (FEC)-containing electrolyte. Here, other binder systems were evaluated, polyacrylic acid (PAAH) mixed with CMC, CMC in buffered solution at pH 3 and amylopectin. However CMC showed the better performance in terms of cycle life of the electrode. Whatever the binder, cycle life decreases with increasing the active mass loading, which is attributed to both the precipitation of liquid electrolyte degradation products and to the loss of electrical contacts within the composite electrode and with the current collector as a consequence of the active particles volume variations. Furthermore, calendaring the electrode unfortunately decreases the cycle life. The rate performance was studied as a function of the active mass loading and was shown to be determined by the electrode polarization resistance. Finally, full cells cycling tests with Li1Ni1/3Co1/3Mn1/3O2 at the positive electrode were done. 60\% of the capacity is retained after 200 cycles at the surface capacity of 2.7 mAh cm(-2). (C) 2014 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède |