Repozitorij Univerze v Novi Gorici

Izpis gradiva
A+ | A- | SLO | ENG

Naslov:The mechanism of Li2S activation in lithium-sulfur batteries: Can we avoid the polysulfide formation?
Avtorji:Vižintin, Alen (Avtor)
Chabanne, Laurent (Avtor)
Tchernychova, Elena (Avtor)
Arčon, Iztok (Avtor)
Stievano, Lorenzo (Avtor)
Aquilanti, Giuliana (Avtor)
Antonietti, Markus (Avtor)
Fellinger, Tim-Patric (Avtor)
Dominko, Robert (Avtor)
Datoteke:Gradivo nima datotek. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Electrochemical reactions in the LieS batteries are considered as a multistep reaction process with at least 2e3 equilibrium states. Here we report a possibility of having a conversion of Li2S into sulfur without detectible formation of polysulfides. That was confirmed by using a novel material system consisting of carbon coated Li2S particles prepared by carbothermal reduction of Li2SO4. Two independent in operando measurements showed direct oxidation of Li2S into sulfur for this system, with almost negligible formation of polysulfides at potentials above 2.5 V vs. Li/Liþ. Our results link the diversity of first charge profiles in the literature to the Li2S oxidation mechanism and show the importance of ionic wiring within the material. Furthermore, we demonstrate that the Li2S oxidation mechanism depends on the relative amount of soluble sulfur in the electrolyte. By controlling the type and the amount of electrolyte within the encapsulating carbon shell, it is thereby possible to control the reaction mechanism of Li2S activation.
Ključne besede:Lithium-sulfur batteries Li2S active material XAS UV/Vis spectroscopy Li2S activation
Leto izida:2017
Št. strani:208-217
Številčenje:344
COBISS_ID:4706555 Povezava se odpre v novem oknu
URN:URN:SI:UNG:REP:HW5BO5OE
DOI:http://dx.doi.org/10.1016/j.jpowsour.2017.01.112 Povezava se odpre v novem oknu
Število ogledov:3085
Število prenosov:0
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Gradivo ni uvrščeno v področja.
:
  
Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.

Postavite miškin kazalec na naslov za izpis povzetka. Klik na naslov izpiše podrobnosti ali sproži prenos.

Gradivo je del revije

Naslov:Journal of Power Sources
Založnik:Elsevier
ISSN:0378-7753
Leto izida:2017

Nazaj