ChemInform Abstract: NMR and X-Ray Absorption Study of Lithium Intercalation in Micro- and Nanocrystalline Anatase

Autor:	Tracey Hanley, Russell F. Howe, Nicholas K. Roberts, Vittorio Luca
Rok vydání:	2010
Předmět:	chemistry.chemical_compound Anatase Crystallography Absorption spectroscopy Chemistry Intercalation (chemistry) chemistry.chemical_element Orthorhombic crystal system Lithium General Medicine Lithium titanate Nanocrystalline material Titanium
Zdroj:	ChemInform. 30
ISSN:	1522-2667 0931-7597
Popis:	The intercalation of Li into micro- and nanocrystalline anatase xerogel powders using n-butyllithium and various preparation conditions has been studied by 6Li and 7Li solid-state NMR and X-ray absorption spectroscopy. The orthorhombic lithium titanate phase which forms for Li/Ti 0.30. These two lithium environments are assigned to Li+ ions in similar structural sites that are uncoupled (species A) and weakly coupled (species B) to conduction band electrons. Nanocrystalline anatase samples produced by sol−gel methods differ from microcrystalline anatase in that the proportion of species A is greater. NMR further suggests that the coordination number of species A cannot be greater than five while no definite conclusions could be reached from NMR concerning species B. Titanium ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5a05c3eff6b7dc7fb1bf337833e1a4a3 https://doi.org/10.1002/chin.199943012 Zobrazit plný text záznamu Plný text