An advanced all-solid-state Li-ion battery model

Raijmakers, LHJ; Danilov, DL; Eichel, RA; Notten, PHL

An advanced all-solid-state Li-ion battery model

Raijmakers, LHJ Danilov, DL Eichel, RA Notten, PHL

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Electrochimica Acta, 2020, 330
Issue Date:: 2020-01-10

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Field	Value	Language
dc.contributor.author	Raijmakers, LHJ
dc.contributor.author	Danilov, DL
dc.contributor.author	Eichel, RA
dc.contributor.author	Notten, PHL
dc.date.accessioned	2020-10-15T05:33:59Z
dc.date.available	2020-10-15T05:33:59Z
dc.date.issued	2020-01-10
dc.identifier.citation	Electrochimica Acta, 2020, 330
dc.identifier.issn	0013-4686
dc.identifier.issn	1873-3859
dc.identifier.uri	http://hdl.handle.net/10453/143264
dc.description.abstract	© 2019 Elsevier Ltd A new advanced mathematical model is proposed to accurately simulate the behavior of all-solid-state Li-ion batteries. The model includes charge-transfer kinetics at both electrode/electrolyte interfaces, diffusion and migration of mobile lithium ions in the electrolyte and positive electrode. In addition, electrical double layers are considered, representing the space-charge separation phenomena at both electrode/electrolyte interfaces. The model can be used to simultaneously study the individual overpotential and impedance contributions together with concentration gradients and electric fields across the entire battery stack. Both galvanostatic discharge and impedance simulations have been experimentally validated with respect to 0.7 mAh Li/LiPON/LiCoO2 thin film, all-solid-state, batteries. The model shows good agreement with galvanostatic discharging, voltage relaxation upon current interruption, and impedance measurements. From the performed AC and DC simulations it can be concluded that the overpotential across the LiPON electrolyte is most dominant and is therefore an important rate-limiting factor. In addition, it is found that both ionic and electronic diffusion coefficients in the LiCoO2 electrode seriously influence the battery performance. The present model is generally applicable to all-solid-state batteries where combined ionic and electronic transport takes place and allows for optimizing the battery components to increase the effective energy density, which leads to a decreasing demand for materials and costs.
dc.language	English
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartof	Electrochimica Acta
dc.relation.isbasedon	10.1016/j.electacta.2019.135147
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Energy
dc.title	An advanced all-solid-state Li-ion battery model
dc.type	Journal Article
utslib.citation.volume	330
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-10-15T05:33:50Z
pubs.publication-status	Published
pubs.volume	330

Abstract:

© 2019 Elsevier Ltd A new advanced mathematical model is proposed to accurately simulate the behavior of all-solid-state Li-ion batteries. The model includes charge-transfer kinetics at both electrode/electrolyte interfaces, diffusion and migration of mobile lithium ions in the electrolyte and positive electrode. In addition, electrical double layers are considered, representing the space-charge separation phenomena at both electrode/electrolyte interfaces. The model can be used to simultaneously study the individual overpotential and impedance contributions together with concentration gradients and electric fields across the entire battery stack. Both galvanostatic discharge and impedance simulations have been experimentally validated with respect to 0.7 mAh Li/LiPON/LiCoO2 thin film, all-solid-state, batteries. The model shows good agreement with galvanostatic discharging, voltage relaxation upon current interruption, and impedance measurements. From the performed AC and DC simulations it can be concluded that the overpotential across the LiPON electrolyte is most dominant and is therefore an important rate-limiting factor. In addition, it is found that both ionic and electronic diffusion coefficients in the LiCoO2 electrode seriously influence the battery performance. The present model is generally applicable to all-solid-state batteries where combined ionic and electronic transport takes place and allows for optimizing the battery components to increase the effective energy density, which leads to a decreasing demand for materials and costs.

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http://hdl.handle.net/10453/143264