Inherent electrochemical activity of TiO2 (anatase, rutile) enhances the charge capacity of cathodes of lithium-sulfur batteries

Zlámalová, Magda; Pitňa Lásková, Barbora; Vinarčíková, Monika; Zukalová, Markéta; Kavan, Ladislav

doi:https://dx.doi.org/10.1007/s10008-022-05115-z

Počet záznamů: 1

Inherent electrochemical activity of TiO2 (anatase, rutile) enhances the charge capacity of cathodes of lithium-sulfur batteries

1.

SYSNO ASEP	0554275
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Inherent electrochemical activity of TiO2 (anatase, rutile) enhances the charge capacity of cathodes of lithium-sulfur batteries
Tvůrce(i)	Zlámalová, Magda (UFCH-W)_{RID, ORCID, SAI} Pitňa Lásková, Barbora (UFCH-W)_ORCID Vinarčíková, Monika (UFCH-W) Zukalová, Markéta (UFCH-W)_{RID, SAI, ORCID} Kavan, Ladislav (UFCH-W)_{RID, ORCID}
Zdroj.dok.	Journal of Solid State Electrochemistry. - : Springer - ISSN 1432-8488 Roč. 26, č. 3 (2022), s. 639-647
Poč.str.	9 s.
Jazyk dok.	eng - angličtina
Země vyd.	DE - Německo
Klíč. slova	reduced graphene oxide ; performance ; carbon ; host ; separator ; layers ; Titanium dioxide ; Lithium-sulfur battery ; Coin cells ; Mott-Schottky analysis ; Flatband potential
Vědní obor RIV	CG - Elektrochemie
Obor OECD	Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
CEP	GA20-03564S GA ČR - Grantová agentura ČR
Způsob publikování	Omezený přístup
Institucionální podpora	UFCH-W - RVO:61388955
UT WOS	000742794800001
EID SCOPUS	85123075845
DOI	https://doi.org/10.1007/s10008-022-05115-z
Anotace	The addition of nanocrystalline titanium dioxide (P90) to a cathode of Li/S cell enhances its voltammetric charge capacity by 19%, from which only a small fraction (ca. 1%) is assignable to the intrinsic Li-storage in TiO2. The flatband potential of anatase (the main component of P90) and rutile (the second main component of P90) equals 2.1 V vs. Li+/Li for both anatase and rutile. The S-8 reduction is triggered at the same potential, confirming that TiO2 behaves like an ideally rectifying semiconductor electrode for sulfur. The modification of glass-fiber separator by P90 further improves the charge capacity of the Li/S cell. Titanium dioxide is active in the Li/S cell not only for immobilization of polysulfides on the sulphiphilic surface but also due to its inherent electrochemical activity for sulfur reduction at potentials negative to V-fb.
Pracoviště	Ústav fyzikální chemie J.Heyrovského
Kontakt	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Rok sběru	2023
Elektronická adresa	http://hdl.handle.net/11104/0328906

Počet záznamů: 1