Titanium migration driven by Li vacancies in Li sub(1-x)Ti sub(2)O sub(4) spinel

Titanium migration driven by Li vacancies in Li sub(1-x)Ti sub(2)O sub(4) spinel

Gentle oxidation of lithium titanate spinel (LiTi sub(2)O sub(4)) with water at room temperature gives Li-deficient Li sub(0.33)Ti sub(2)O sub(4). Combined X-ray and neutron Rietveld analysis shows that 28% of the Ti cations are displaced to alternative octahedral sites, in keeping with a proposed m...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2015-07, Vol.51 (57), p.11359-11361
Hauptverfasser: Kitada, A, Arevalo-Lopez, A M, Attfield, J P
Format: Artikel
Sprache:eng
Schlagworte:
Displacement
Lithium
Migration
Spinel
Titanates
Titanium
Vacancies
X-rays
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Zusammenfassung:Gentle oxidation of lithium titanate spinel (LiTi sub(2)O sub(4)) with water at room temperature gives Li-deficient Li sub(0.33)Ti sub(2)O sub(4). Combined X-ray and neutron Rietveld analysis shows that 28% of the Ti cations are displaced to alternative octahedral sites, in keeping with a proposed model based on Ti-migration limited by Li-vacancy concentration.
ISSN:1359-7345
1364-548X
DOI:10.1039/c5cc02800k