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Direct Determination of Diffusion Coefficients in Commercial Li-Ion Batteries

Cabanero, Maria and Boaretto, Nicola and Röder, Manuel and Müller, Jana and Kallo, Josef and Latz, Arnulf (2018) Direct Determination of Diffusion Coefficients in Commercial Li-Ion Batteries. Journal of The Electrochemical Society, 165 (5), A847-A855. Electrochemical Society, Inc.. DOI: 10.1149/2.0301805jes ISBN 0013-4651/2018/165(5)/A847/9/ ISSN 0013-4651

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Official URL: http://jes.ecsdl.org/content/165/5/A847.full.pdf

Abstract

Diffusion coefficients are important parameters for the characterization of new electrode materials, but they are also essential for the study of cell aging and as input parameters in battery modeling. In this report, the applicability of the galvanostatic intermittent titration technique (GITT) on commercial cells is studied. A GITT protocol is applied on a set of commercial cells with graphite anodes and various cathode materials. The cell response is then compared with the ones of the individual electrodes, obtained in three-electrode and half-cell configurations. In particular, mostly due to the particular potential profile of graphite, the full cell GITT response corresponds to the anode and cathode response at low and high state of charge, respectively. Therefore, it is possible to estimate the diffusion coefficients of the individual electrodes by a simple experiment on commercial cells, although only in limited ranges of SOC. If the experiments are performed at different temperatures, it is also possible to determine the activation energies of the diffusion coefficients. In conclusion, GITT allows an estimation of the diffusivity data in commercial cells, and can be therefore used as fast analytical tool for the study of aging and for the modeling of lithium-ion batteries.

Item URL in elib:https://elib.dlr.de/124122/
Document Type:Article
Additional Information:http://jes.ecsdl.org/content/165/5/A847.full#ref-list-1
Title:Direct Determination of Diffusion Coefficients in Commercial Li-Ion Batteries
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cabanero, Mariamarian.cabanero (at) isc.fraunhofer.deUNSPECIFIED
Boaretto, Nicolaniclola.boaretto (at) isc.fraunhofer.deUNSPECIFIED
Röder, Manuelmanuel.roeder (at) isc.fraunhofer.deUNSPECIFIED
Müller, Janajana.mueller (at) isc.fraunhofer.deUNSPECIFIED
Kallo, Josefjosef.kallo (at) dlr.deUNSPECIFIED
Latz, Arnulfarnulf.latz (at) dlr.deUNSPECIFIED
Date:22 March 2018
Journal or Publication Title:Journal of The Electrochemical Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:165
DOI :10.1149/2.0301805jes
Page Range:A847-A855
Publisher:Electrochemical Society, Inc.
Series Name:Batteries and Energy Storage
ISSN:0013-4651
ISBN:0013-4651/2018/165(5)/A847/9/
Status:Published
Keywords:diffusion coefficient, galvanostatic intermittent titration technique, Lithium battery
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Energie und Verkehr
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Energy System Integration
Institute of Engineering Thermodynamics > Computational Electrochemistry
Deposited By: Baumann, Monika
Deposited On:20 Dec 2018 10:56
Last Modified:23 Feb 2019 00:23

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