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Naslov:Polysulfides formation in different electrolytes from the perspective of X-ray absorption spectroscopy
Avtorji:ID Dominko, Robert (Avtor)
ID Vižintin, Alen (Avtor)
ID Aquilanti, Giuliana (Avtor)
ID Stievano, Lorenzo (Avtor)
ID Joseph Helen, Maria (Avtor)
ID Reddy Munnangi, Anji (Avtor)
ID Fichtner, Maximilian (Avtor)
ID Arčon, Iztok (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. 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
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Li-S batteries are promising energy storage technology for the future, however there two major problems remained which need to be solved before successful commercialization. Capacity fading due to polysulfide shuttle and corrosion of lithium metal are directly connected with the type and quantity of electrolyte used in the cells. Several recent works show dependence of the electrochemical behavior of Li-S batteries on type of the electrolyte. In this work we compare and discuss a discharge mechanism of sulfur conversion in three different electrolytes based on measurements with sulfur K-edge XAS. The sulfur conversion mechanism in the ether based electrolytes, the most studied type of solvents in the Li-S batteries, which are enabling high solubility of polysulfides are compared with the fluorinated ether based electrolytes with a reduced polysulfide solubility and in carbonate based electrolytes with the sulfur confined into a ultramicroporous carbon. In all three cases the sulfur reduction proceeds through polysulfide intermediate phases with a difference on the type polysulfides detected at different steps of discharge.
Ključne besede:Li-S batteries, operando sulphur K-edge XANES, EXAFS, Li-polysulphides
Leto izida:2018
Št. strani:str. A5014-A5019
Številčenje:#Vol. #165, #no. #1
PID:20.500.12556/RUNG-4134 Novo okno
COBISS.SI-ID:6296602 Novo okno
ISSN pri članku:1945-7111
DOI:10.1149/2.0151801jes Novo okno
NUK URN:URN:SI:UNG:REP:08GH8NRB
Datum objave v RUNG:01.06.2018
Število ogledov:3653
Število prenosov:0
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Gradivo je del revije

Naslov:Journal of the Electrochemical Society
Založnik:Electrochemical Society
Leto izida:2018
ISSN:1945-7111
COBISS.SI-ID:22698791 Novo okno

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Jezik:Ni določen
Ključne besede:struktura snovi, spektroskopija, elektroliti


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