Na insertion into nanocrystalline Li4Ti5O12 spinel: An electrochemical study

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00475663" target="_blank" >RIV/61388955:_____/17:00475663 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/17:00475663 RIV/00216208:11310/17:10367957
Result on the web
<a href="http://dx.doi.org/10.1016/j.electacta.2017.05.161" target="_blank" >http://dx.doi.org/10.1016/j.electacta.2017.05.161</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.electacta.2017.05.161" target="_blank" >10.1016/j.electacta.2017.05.161</a>

Result language
angličtina
Original language name
Na insertion into nanocrystalline Li4Ti5O12 spinel: An electrochemical study
Original language description
Na insertion into sol-gel made nanocrystalline spinel, Li4Ti5O12 (nano LTS) and reference commercial spinel (Aldrich LTS) is studied by cyclic voltammetry and galvanostatic chronopotentiometry at 1C and 2C charging/discharging rates. Nanocrystalline LTS exhibits the best performance for Na storage, its charge capacities reach 156 mAhg-1 and are twice as high as those of reference Aldrich LTS. A capacity drop of nano LTS taking place during galvanostatic cycling is ascribed to irreversible structural changes induced by Na accommodation in the Li4Ti5O12 lattice. Raman spectroscopy of nano LTS after Na insertion reveals a formation of orthorhombic Li0,5TiO2 phase in original nanocrystalline Li4Ti5O12. The occurrence of this phase, which is commonly formed during Li insertion into anatase, is discussed in terms of induced Li redistribution and its accommodation in very minor anatase impurities detectable by Raman spectroelectrochemistry and HRTEM, but visible neither by X-ray diffractometry nor cyclic voltammetry of Na insertion.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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