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Nanocrystalline TiO2 and Li4Ti5O12 as Novel Inorganic Host Materials for Li-S Batteries
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SYSNO ASEP 0536906 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve SCOPUS Title Nanocrystalline TiO2 and Li4Ti5O12 as Novel Inorganic Host Materials for Li-S Batteries Author(s) Zukalová, Markéta (UFCH-W) RID, SAI, ORCID
Kavan, Ladislav (UFCH-W) RID, ORCIDSource Title ECS Transactions. - : Institute of Physics Publishing - ISSN 1938-5862
Roč. 99, č. 1 (2020), s. 151-159Number of pages 9 s. Language eng - English Country US - United States Keywords Nanocrystalline TiO2 ; Li4Ti5O12 ; Li-S batteries Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) R&D Projects GA20-03564S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFCH-W - RVO:61388955 EID SCOPUS 85099248676 DOI 10.1149/09901.0151ecst Annotation 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. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0314657
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