Nanocrystalline TiO2 and Li4Ti5O12 as Novel Inorganic Host Materials for Li-S Batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00536906" target="_blank" >RIV/61388955:_____/20:00536906 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0314657" target="_blank" >http://hdl.handle.net/11104/0314657</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1149/09901.0151ecst" target="_blank" >10.1149/09901.0151ecst</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanocrystalline TiO2 and Li4Ti5O12 as Novel Inorganic Host Materials for Li-S Batteries

Popis výsledku v původním jazyce

Composites of sulfur with nanocrystalline TiO2, Li4Ti5O12, and carbon were prepared by melting diffusion and characterized by X-ray diffraction, Raman spectroscopy, and cyclic voltammetry. XRD analysis was hindered by overlap of the majority of diagnostic peaks of TiO2 with diffraction peaks of sulfur. Raman spectroscopy indicates strong attenuation of sulfur-related modes, if S is encapsulated in porous carbonaceous material or coated with conductive carbonaceous additive in thin film electrode. In turn, this effect proves perfect accommodation of S inside pores of the carbonaceous skeleton. The best electrochemical performance of a composite of nanocrystalline TiO2 with sulfur was ascribed to large surface area of the host enabling even coverage of its surface by adsorbed sulfur. TiCl4 post treatment had negative effect on electrochemical performance of modified electrodes.

Název v anglickém jazyce

Nanocrystalline TiO2 and Li4Ti5O12 as Novel Inorganic Host Materials for Li-S Batteries

Popis výsledku anglicky

Composites of sulfur with nanocrystalline TiO2, Li4Ti5O12, and carbon were prepared by melting diffusion and characterized by X-ray diffraction, Raman spectroscopy, and cyclic voltammetry. XRD analysis was hindered by overlap of the majority of diagnostic peaks of TiO2 with diffraction peaks of sulfur. Raman spectroscopy indicates strong attenuation of sulfur-related modes, if S is encapsulated in porous carbonaceous material or coated with conductive carbonaceous additive in thin film electrode. In turn, this effect proves perfect accommodation of S inside pores of the carbonaceous skeleton. The best electrochemical performance of a composite of nanocrystalline TiO2 with sulfur was ascribed to large surface area of the host enabling even coverage of its surface by adsorbed sulfur. TiCl4 post treatment had negative effect on electrochemical performance of modified electrodes.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/GA20-03564S" target="_blank" >GA20-03564S: Nové hostitelské materiály a struktury pro pokročilé baterie lithium-síra</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

ECS Transactions

ISSN

1938-5862

e-ISSN

—

Svazek periodika

99

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

151-159

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85099248676