Bitte benutzen Sie diese Kennung, um auf die Ressource zu verweisen:
http://dx.doi.org/10.18419/opus-13342
Langanzeige der Metadaten
DC Element | Wert | Sprache |
---|---|---|
dc.contributor.author | Ströbel, Marco | - |
dc.contributor.author | Kiefer, Larissa | - |
dc.contributor.author | Pross-Brakhage, Julia | - |
dc.contributor.author | Hemmerling, Jessica | - |
dc.contributor.author | Finster, Philipp | - |
dc.contributor.author | Ziebert, Carlos | - |
dc.contributor.author | Birke, Kai Peter | - |
dc.date.accessioned | 2023-07-26T13:02:26Z | - |
dc.date.available | 2023-07-26T13:02:26Z | - |
dc.date.issued | 2023 | de |
dc.identifier.issn | 2313-0105 | - |
dc.identifier.other | 1853916714 | - |
dc.identifier.uri | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-133611 | de |
dc.identifier.uri | http://elib.uni-stuttgart.de/handle/11682/13361 | - |
dc.identifier.uri | http://dx.doi.org/10.18419/opus-13342 | - |
dc.description.abstract | Since Sony launched the commercial lithium-ion cell in 1991, the composition of the liquid electrolytes has changed only slightly. The electrolyte consists of highly flammable solvents and thus poses a safety risk. Solid-state ion conductors, classified as non-combustible and safe, are being researched worldwide. However, they still have a long way to go before being available for commercial cells. As an alternative, this study presents glyceryl tributyrate (GTB) as a flame retardant and eco-friendly solvent for liquid electrolytes for lithium-ion cells. The remarkably high flashpoint (𝑇FP=174∘C) and the boiling point (𝑇BP=287∘C) of GTB are approximately 150 K higher than that of conventional linear carbonate components, such as ethyl methyl carbonate (EMC) or diethyl carbonate (DEC). The melting point (𝑇MP=-75∘C) is more than 100 K lower than that of ethylene carbonate (EC). A life cycle test of graphite/NCM with 1 M LiTFSI dissolved in GTB:EC (85:15 wt) achieved a Coulombic efficiency of above 99.6% and the remaining capacity resulted in 97% after 50 cycles (𝐶/4) of testing. The flashpoint of the created electrolyte is 𝑇FP=172∘C and, therefore, more than 130 K higher than that of state-of-the-art liquid electrolytes. Furthermore, no thermal runaway was observed during thermal abuse tests. Compared to the reference electrolyte LP40, the conductivity of the GTB-based is reduced, but the electrochemical stability is highly improved. GTB-based electrolytes are considered an interesting alternative for improving the thermal stability and safety of lithium-ion cells, especially in low power-density applications. | en |
dc.description.sponsorship | Bundesministerium fuer Bildung und Forschung | de |
dc.description.sponsorship | Helmholtz Association | de |
dc.language.iso | en | de |
dc.relation.uri | doi:10.3390/batteries9070348 | de |
dc.rights | info:eu-repo/semantics/openAccess | de |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | de |
dc.subject.ddc | 621.3 | de |
dc.title | High flashpoint and eco-friendly electrolyte solvent for lithium-ion batteries | en |
dc.type | article | de |
dc.date.updated | 2023-07-07T07:28:07Z | - |
ubs.fakultaet | Informatik, Elektrotechnik und Informationstechnik | de |
ubs.fakultaet | Fakultätsübergreifend / Sonstige Einrichtung | de |
ubs.institut | Institut für Photovoltaik | de |
ubs.institut | Fakultätsübergreifend / Sonstige Einrichtung | de |
ubs.publikation.seiten | 15 | de |
ubs.publikation.source | Batteries 9 (2023), No. 348 | de |
ubs.publikation.typ | Zeitschriftenartikel | de |
Enthalten in den Sammlungen: | 04 Fakultät Energie-, Verfahrens- und Biotechnik |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
batteries-09-00348.pdf | 3,93 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons