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Understanding the I...
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Chien, Yu-Chuan,1990-Uppsala universitet,Strukturkemi
(författare)
Understanding the Impact of Precipitation Kinetics on the Electrochemical Performance of Lithium–Sulfur Batteries by Operando X-ray Diffraction
- Artikel/kapitelEngelska2022
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2022-02-03
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American Chemical Society (ACS),2022
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electronicrdacarrier
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LIBRIS-ID:oai:DiVA.org:uu-453441
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-453441URI
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https://doi.org/10.1021/acs.jpcc.1c10197DOI
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Språk:engelska
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Sammanfattning på:engelska
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The complex reaction mechanism of the lithium–sulfur battery system consists of re-petitive dissolution and precipitation of the sulfur-containing species in the positiveelectrode. In particular, the precipitation of lithium sulfide (Li2S) during discharge hasbeen considered a crucial factor for achieving a high degree of active material utiliza-tion. Here, the influence of electrolyte amount, electrode thickness, applied current andelectrolyte salt on the formation of Li2S is systematically investigated in a series ofoperando X-ray diffraction experiments. Through a combination of simultaneous dif-fraction and resistance measurements, the evolution of the intensity from Li2S is di-rectly correlated to the variation in internal resistance and transport properties insidethe positive electrode. The correlation indicates that at different stages, the Li2S precip-itation both facilitates and impedes the discharge process. The kinetic information ofLi2S formation offers mechanistic explanations for the strong impact of different elec-trochemical cell parameters on the performance and thus, directions for holistic optimi-zations to achieve high sulfur utilization.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Menon, Ashok S.Uppsala universitet,Strukturkemi(Swepub:uu)ashsr432
(författare)
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Brant, WilliamUppsala universitet,Strukturkemi(Swepub:uu)wilbr976
(författare)
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Lacey, MatthewScania CV AB(Swepub:uu)matla332
(författare)
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Brandell, Daniel,1975-Uppsala universitet,Strukturkemi(Swepub:uu)dbr10334
(författare)
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Uppsala universitetStrukturkemi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:The Journal of Physical Chemistry C: American Chemical Society (ACS)126:6, s. 2971-29791932-74471932-7455
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