Structural and electrochemical characterization of the LiNi1-yTiyO2 electrode materials obtained by direct solid-state reactions
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CROGUENNEC, Laurence | |
| hal.structure.identifier | Institut Laue-Langevin [ILL] | |
| dc.contributor.author | SUARD, Emmanuelle | |
| hal.structure.identifier | Centre National d'Études Spatiales [Toulouse] [CNES] | |
| dc.contributor.author | WILLMANN, Patrick | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| dc.date.issued | 2002 | |
| dc.identifier.issn | 0897-4756 | |
| dc.description.abstractEn | LiNi1-yTiyO2 (y ≤ 0.15) layered oxides were synthesized at high temperature by solid-state reactions. Rietveld refinements of their X-ray and neutron diffraction patterns showed that these phases were characterized by an α-NaFeO2-type structure with the following cationic distribution: (Li1-zNi2+z)3b(Ti4+tNi2+t+zNi3+1-z-2t)3aO2 [t = y(1 + z)]. The amount of Ni2+ ions in the lithium site increases with y. A magnetic study confirmed the presence of paramagnetic ions in the interslab space and, therefore, the cationic distribution. These materials used as positive electrode in lithium batteries show reversible behavior. A large decrease of the capacity is observed with increasing y, because of the presence of extra nickel ions in the lithium sites. For the "LixNi0.95Ti0.05O2" composition, 144 mA h/g are obtained in discharge at the 14th cycle at the C/20 rate. The "LixNi1-yTiyO2" phases were characterized for y = 0.05 and 0.10: the simultaneous presence of titanium ions in the slab and of a significant amount of extra nickel ions in the lithium sites prevents phase transitions upon cycling. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.subject.en | Layered compounds | |
| dc.subject.en | Inorganic compounds | |
| dc.subject.en | Chemical synthesis | |
| dc.subject.en | High temperature | |
| dc.subject.en | Solid state reactions | |
| dc.subject.en | X-ray diffractions | |
| dc.subject.en | Neutron diffraction | |
| dc.title.en | Structural and electrochemical characterization of the LiNi1-yTiyO2 electrode materials obtained by direct solid-state reactions | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/cm011265v | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Chemistry of Materials | |
| bordeaux.page | 2149-2157 | |
| bordeaux.volume | 14 | |
| bordeaux.issue | 5 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00733619 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00733619v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20of%20Materials&rft.date=2002&rft.volume=14&rft.issue=5&rft.spage=2149-2157&rft.epage=2149-2157&rft.eissn=0897-4756&rft.issn=0897-4756&rft.au=CROGUENNEC,%20Laurence&SUARD,%20Emmanuelle&WILLMANN,%20Patrick&DELMAS,%20Claude&rft.genre=article |
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