Electrochemical properties of spinel Li4Ti5O12 nanoparticlesnprepared via a low-temperature solid route

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F16%3A00464376" target="_blank" >RIV/61388955:_____/16:00464376 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10008-016-3272-x" target="_blank" >http://dx.doi.org/10.1007/s10008-016-3272-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10008-016-3272-x" target="_blank" >10.1007/s10008-016-3272-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrochemical properties of spinel Li4Ti5O12 nanoparticlesnprepared via a low-temperature solid route

Popis výsledku v původním jazyce

Spinel phase Li4Ti5O12 (s-LTO) with an average primarynparticle size of 150 nm was synthesised via a solid state routenby calcining a precursor mixture at 600 °C. The precursor wasnprepared from a stoichiometric mixture of TiO2 nanoparticles andnan ethanolic solution of Li acetate and activated by ball-milling.nEffects of the calcination temperature and atmosphere are examinednin relation to the coexistence of impurity phases by X-rayndiffraction and 6Li MAS NMR. The charge capacity of s-LTO,ndetermined from cyclic voltammogram at a scan rate of 0.1 mV/s,nwas 142 mAh/g. The capacity of our optimised material is superiornto that of commercially available spinel (a-LTO), despite the considerablynsmaller BET-specific surface area of the former. Thensuperior properties of our material were also demonstrated byngalvanostatic charging/discharging. From these observations, wenconclude that the presented low-temperature solid state synthesisnroute provides LTO with improved electrochemical performance.

Název v anglickém jazyce

Electrochemical properties of spinel Li4Ti5O12 nanoparticlesnprepared via a low-temperature solid route

Popis výsledku anglicky

Spinel phase Li4Ti5O12 (s-LTO) with an average primarynparticle size of 150 nm was synthesised via a solid state routenby calcining a precursor mixture at 600 °C. The precursor wasnprepared from a stoichiometric mixture of TiO2 nanoparticles andnan ethanolic solution of Li acetate and activated by ball-milling.nEffects of the calcination temperature and atmosphere are examinednin relation to the coexistence of impurity phases by X-rayndiffraction and 6Li MAS NMR. The charge capacity of s-LTO,ndetermined from cyclic voltammogram at a scan rate of 0.1 mV/s,nwas 142 mAh/g. The capacity of our optimised material is superiornto that of commercially available spinel (a-LTO), despite the considerablynsmaller BET-specific surface area of the former. Thensuperior properties of our material were also demonstrated byngalvanostatic charging/discharging. From these observations, wenconclude that the presented low-temperature solid state synthesisnroute provides LTO with improved electrochemical performance.

Druh

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

CEP obor

CG - Elektrochemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA15-06511S" target="_blank" >GA15-06511S: Studium a optimalizace anorganických nanomateriálů pro kapacitní a inzerční ukládání alkalických kovů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Solid State Electrochemistry

ISSN

1432-8488

e-ISSN

—

Svazek periodika

20

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

2673-2683

Kód UT WoS článku

000383771700008

EID výsledku v databázi Scopus

2-s2.0-84987923180