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dc.contributor.authorMahmoud, Abdelfattah-
dc.contributor.authorAmarilla, José Manuel-
dc.contributor.authorLasri, Karima-
dc.contributor.authorSaadoune, Ismael-
dc.identifierdoi: 10.1016/j.electacta.2013.01.083-
dc.identifierissn: 0013-4686-
dc.identifier.citationElectrochimica Acta 93: 163-172 (2013)-
dc.description.abstractTo study the influence of the synthesis method on the electrochemical performances of the Li4Ti5O12 spinel (LTO) several samples have been prepared by three different synthesis procedures (sol¿gel, self-combustion and solid-state). The use of the same Ti-source (TiCl4) and strictly the same experimental conditions has allowed performing a meaningful comparison analysis. The structural characterization by X-ray diffraction shown that cubic spinels, with similar cell parameter (ac ~ 8.35A¿ ), were obtained for the three methods. The purity of the samples prepared by sol¿gel (LTO-SG) and combustion (LTO-CB) was very high, >96%. FE-SEM studies revealed that the particle size (ps) and the particle aggregation notably changed with the synthesis method. The ps-values grow up from 301 nm for LTO-SG to 1580 nm for the sample synthesized by solid-state (LTO-SS). The comparison of the galvanostatic results permitted to demonstrate that LTO-electrochemical performances (capacity, cycleability and rate capability) strongly depend on the synthesis method. The LTO-SG sample exhibited the best electrochemical performances, with a discharge capacity of 146 mAh/g at 0.2 C, elevated cycleability and the highest rate capability. New formulation Li-ion full-cells with the synthesized LTO-samples as anode and LiCo2/3Ni1/6Mn1/6O2 as cathode have been assembled and studied. They have remarkable cycling performances with capacity retentions >90% after 50 cycles.-
dc.description.sponsorshipFinancial support through the projects MAT2011-22969, MAT2011-24198 (MINECO), MATERYENER P2009/PPQ-1626 (CAM) and 2009MA0007 (CSIC/CNRST) and CNRST (Recherche Sectorielle RS03/2011) are gratefully recognized. A. Mahmoud thanks the AECID for the MAEC-AECI fellowship. -
dc.subjectAnode material-
dc.subjectLithium titanium oxide-
dc.subjectLi4Ti5O12 spinel-
dc.subjectLi-ion full-cell-
dc.subjectLithium battery-
dc.titleInfluence of the synthesis method on the electrochemical properties of the Li4Ti5O12 spinel in Li-half and Li-ion full-cells. A systematic comparison-
dc.description.versionPeer Reviewed-
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