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Study of lithium deposition and applicability of solid polymer electrolytes in lithium cells

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Study of lithium deposition and applicability of solid polymer electrolytes in lithium cells (Volume 10) (English shop)

Sanaz Momeni Boroujeni (Author)

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Lithium (Li) deposition is a problem in Li batteries (LB) – both Li metal (LMB) and Li-ion (LIB) batteries – which limits their performance in terms of power and energy density. Two trends can be identified in the advancement of LBs concerning the problem of Li deposition: optimization of the existing system (the state-of-the-art LIBs) and further development of cell components such as electrolytes. This work addresses both approaches.
In the first part, this study investigates Li deposition in LMB and LIBs. A novel method to study the Li-based transport mechanisms in LIBs is introduced. Later the kinetic deviations between anode and cathode as a consequence of aging and the relation of these deviations to the occurrence of Li-plating are discussed.
In the second part, the applicability of PEO-based solid polymer electrolytes for LMBs to overcome the Li plating issue is investigated. The introduction of various interfacial interlayers at the cathode/electrolyte interphase was studied to improve the electrochemical stability of the cells. Cells with an in-situ electro-deposited interlayer showed the best cyclability.

ISBN-13 (Hard Copy) 9783736977099
ISBN-13 (eBook) 9783736967090
Language English
Page Number 174
Lamination of Cover matt
Edition 1.
Book Series Energie & Nachhaltigkeit
Volume 10
Publication Place Göttingen
Place of Dissertation Stuttgart
Publication Date 2022-12-30
General Categorization Dissertation
Departments Electrical engineering
Keywords Lithium plating, Lithium (Li), Lithium deposition, Solid polymer electrolyte (SPE), Lithium battery (LB), Kinetic balancing, Kinetic properties of cell components, Li-ion battery (LIB), Li metal battery (LMB), state-of-the-art LIB, charge transport regions, charge transfer process, Li-based transport mechanisms, pseudo-two-dimensional (P2D) cell model, Solid Electrolyte Interphase (SEI), Anode’s aging mechanisms, Nernst-Einstein relation, Lithium metal anode, Graphite anode, NMC cathode, LiTFSI Salt, LiFSI Salt, Ether-based liquid electrolyte, Coulombic efficiency, Electrochemical stability of polymer electrolyte, Electrochemical stability window, electrochemical impedance spectroscopy (EIS), Cycling test, Polymer electrolyte, Ionic conductivity of polymer electrolyte, poly(ethylene oxide) (PEO), PEO-based SPE, intermediate coating layer, high voltage cathodes, poly(styrene)-b-poly(ethylene oxide) (PS-b-PEO), poly(styrene) (PS), poly(vinyl alcohol) (PVA), Lithium Aluminum Titanium Phosphate (LATP), cathode/electrolyte interphase, in-situ electro-deposition, Lithium-Ablagerung, Lithium (Li), Lithium-Beschichtung, Feststoff Polymerelektrolyt (SPE), Lithium-Batterie (LB), kinetisches Gleichgewicht, Kinetische Eigenschaften der Zellkomponenten, Li-Ionen-Batterie (LIB), Li-Metall Batterie (LMB), LIB auf dem Stand der Technik, Ladungstransportbereiche, Ladungstransportbereiche, Li-basierte Transportmechanismen, pseudo-zweidimensionales (P2D) Zellmodell, Feststoff-Elektrolyt-Grenzphase (SEI), Alterungsmechanismen der Anode, Nernst-Einstein-Beziehung, Lithium-Metall-Anode, Graphit-Anode, NMC-Kathode, LiTFSI-Salz, LiFSI-Salz, Flüssigelektrolyt auf Etherbasis, Coulomb-Effizienz (CE), Elektrochemische Stabilität von Polymerelektrolyten, Elektrochemisches Stabilitätsfenster (ESW), elektrochemische Impedanzspektroskopie (EIS), Zyklustest, Polymerelektrolyt, Ionenleitfähigkeit von Polymerelektrolyt, Poly(ethylenoxid) (PEO), SPE auf PEO-Basis, Zwischenschicht Beschichtung, Hochspannungskathoden, Poly(styrol)-b-Poly(ethylenoxid) (PS-b-PEO), Poly(styrol) (PS), Poly(vinylalkohol) (PVA), Lithium-Aluminium-Titan-Phosphat (LATP), Kathode/Elektrolyt-Interphase, In-situ-Elektroabscheidung