Solvotermální příprava nanokrystalických Li-Ti-O inzerčních materiálů ? efekt polarity rozpouštědla

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F08%3A00317387" target="_blank" >RIV/61388955:_____/08:00317387 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Solvothermal approach to nanocrystalline Li-Ti-O insertion hosts-solvent polarity effect

Popis výsledku v původním jazyce

The cubic nanocrystalline Li-Ti-O oxides were prepared by the solvothermal reaction of TiO2 and LiOH at 200 oC in water and aliphatic alcohols with different dielectric constants. The reaction in all solvents leads to the formation of white ternary compounds containing Li, Ti, and O. The actual Li content in the prepared materials increases with decreasing polarity of the used solvent. All prepared materials are crystalline, and their structure can be described using a spinel structural model. The structure of materials prepared at a relative dielectric constant (epsilon(r)) value higher than 33 is characterized by Ti disorder when the Ti atoms are distributed between both types of the available octahedral sites with approximately the same probability.The tendency to form phases with Ti disorder decreases with decreasing epsilon(r) of the solvent. All prepared materials are active toward electrochemical Li insertion. The observed specific capacity ranges between 60 and 150 mAh/g.

Název v anglickém jazyce

Solvothermal approach to nanocrystalline Li-Ti-O insertion hosts-solvent polarity effect

Popis výsledku anglicky

The cubic nanocrystalline Li-Ti-O oxides were prepared by the solvothermal reaction of TiO2 and LiOH at 200 oC in water and aliphatic alcohols with different dielectric constants. The reaction in all solvents leads to the formation of white ternary compounds containing Li, Ti, and O. The actual Li content in the prepared materials increases with decreasing polarity of the used solvent. All prepared materials are crystalline, and their structure can be described using a spinel structural model. The structure of materials prepared at a relative dielectric constant (epsilon(r)) value higher than 33 is characterized by Ti disorder when the Ti atoms are distributed between both types of the available octahedral sites with approximately the same probability.The tendency to form phases with Ti disorder decreases with decreasing epsilon(r) of the solvent. All prepared materials are active toward electrochemical Li insertion. The observed specific capacity ranges between 60 and 150 mAh/g.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Material Research

ISSN

0884-2914

e-ISSN

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Svazek periodika

23

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

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Kód UT WoS článku

000254684500035

EID výsledku v databázi Scopus

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