6Li MAS NMR Study of Lithium Insertion into Hydrothermally Prepared Li-Ti-O Spinel
Result description
Open circuit measurement and 6Li magic-angle spinning (MAS) NMR spectroscopy were used to study Li coordination in partly reduced Li1.1 Ti1.9 O4 +d spinels prepared by hydrothermal reaction. The reduced spinels show four different Li sites. Signals at -0.2 and 0.3 ppm correspond to Li in 16d and 8a positions. The signal at 0.9 ppm corresponds to a tetrahedrally coordinated Li and represents the primary site for the inserted lithium. The signal at -0.7 ppm appears simultaneously with a decrease of the population of Li in 8a position and indicates a local phase transition connected with ordering of Li into 16c positions.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
6Li MAS NMR Study of Lithium Insertion into Hydrothermally Prepared Li-Ti-O Spinel
Original language description
Open circuit measurement and 6Li magic-angle spinning (MAS) NMR spectroscopy were used to study Li coordination in partly reduced Li1.1 Ti1.9 O4 +d spinels prepared by hydrothermal reaction. The reduced spinels show four different Li sites. Signals at -0.2 and 0.3 ppm correspond to Li in 16d and 8a positions. The signal at 0.9 ppm corresponds to a tetrahedrally coordinated Li and represents the primary site for the inserted lithium. The signal at -0.7 ppm appears simultaneously with a decrease of the population of Li in 8a position and indicates a local phase transition connected with ordering of Li into 16c positions.
Czech name
Inzerce lithia do hydrothermálně připraveného Li-Ti-O spinelu - 6Li MAS NMR studie
Czech description
Koordinace Li v částečně redukovaných Li1.1Ti1.9O4+? připraveným hydrothermální reakcí byla studována pomocí 6Li MAS NMR spektroskopie. Redukované spinely vykazují čtyři různé signály lithia. Signály charakterizované chemickým posunem -0.2 a 0.3 ppm odpovídají lithiu v pozicích typu 16a a 8a. Signál u 0.9 ppm odpovídá tetraedricky koordinovanému Li a představuje primární pozici pro lithium vstupující do struktury během redukce. Signál u -0.7 ppm se objevuje současně s poklesem populave Li v pozici 8a indikuje fázový přechod lokálního charakteru, který je spojen s uspořádáváním Li v pozici typu 16c.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Electrochemical and Solid-State Letters
ISSN
1099-0062
e-ISSN
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Volume of the periodical
7
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
4
Pages from-to
"A163"-"A166"
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
CF - Physical chemistry and theoretical chemistry
Year of implementation
2004