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Microstructural characterization and multiscale ionic conductivity in lithium and sodium-based solid state electrolytes

Fritsch, Charlotte Alina

Abstract:

In order to meet the increasing need for energy storage systems in consumer devices,
electric vehicles and stationary energy storage devices, the existing battery technologies
are constantly being further developed. An important criterion for the performance of
the battery is its energy density. Even if the cathode accounts mostly for the weight of
a lithium ion battery cell, there is a promising possibility of weight saving on the anode
side by replacing graphite with pure lithium metal. To this end, an electrolyte needs to
be developed that is stable against the potential of the pure metal. Liquid electrolytes
cannot meet this requirement and also involve safety risks as
ammability. Solid-state electrolytes are supposed to enable the use of a lithium-metal electrode.
Additionally, due to the scarcity of resources for lithium, sodium-based technologies are
being developed for use as stationary energy storage devices.
Thiophosphates feature the highest ionic conductivities among all solid electrolytes. In
many cases, amorphous thiophosphates offer even higher conductivities than their crystalline
analogues and their structure can differ, too. ... mehr


Volltext §
DOI: 10.5445/IR/1000133273
Veröffentlicht am 07.10.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Energiespeichersysteme (IAM-ESS)
Institut für Anorganische Chemie (AOC)
Publikationstyp Hochschulschrift
Publikationsdatum 07.10.2021
Sprache Englisch
Identifikator KITopen-ID: 1000133273
HGF-Programm 38.02.03 (POF IV, LK 01) Batteries in Application
Verlag Karlsruher Institut für Technologie (KIT)
Umfang XV, 156 S.
Art der Arbeit Dissertation
Fakultät Fakultät für Chemie und Biowissenschaften (CHEM-BIO)
Institut Institut für Anorganische Chemie (AOC)
Prüfungsdatum 12.04.2021
Projektinformation FESTBATT (BMBF, 03XP0176A)
Schlagwörter solid state electrolyte, garnet electrolyte, hydrogarnet
Referent/Betreuer Ehrenberg, H.
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