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Dynamics and morphology of solid electrolyte interphase (SEI)

Single, Fabian and Horstmann, Birger and Latz, Arnulf (2016) Dynamics and morphology of solid electrolyte interphase (SEI). Physical Chemistry Chemical Physics, 18 (27), pp. 17810-17814. Royal Society of Chemistry. DOI: 10.1039/C6CP02816K ISSN 1463-9076

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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2016/CP/c6cp02816k#!divAbstract

Abstract

We develop a novel theory for the continuous electrochemical formation of porous films to study the solid electrolyte interphase (SEI) on lithium ion battery anodes. Existing SEI studies model a homogeneous morphology and a single relevant transport mechanism. Our approach, in contrast, is based on two transport mechanisms and enables us to track SEI porosity in a spatially resolved way. SEI thickness evolution agrees with existing studies and is validated with experiments. This consistent approach is unprecedented in SEI modeling. We predict a non-zero SEI porosity and the dependence of morphology on transport properties. Additionally, we capture dual-layer chemistry and morphology. Analytic expressions which describe the parameter dependence of all key properties are derived and discussed.

Item URL in elib:https://elib.dlr.de/109079/
Document Type:Article
Title:Dynamics and morphology of solid electrolyte interphase (SEI)
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Single, Fabianfabian.single (at) dlr.deUNSPECIFIED
Horstmann, Birgerbirger.horstmann (at) dlr.deUNSPECIFIED
Latz, Arnulfarnulf.latz (at) dlr.deUNSPECIFIED
Date:13 June 2016
Journal or Publication Title:Physical Chemistry Chemical Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:18
DOI :10.1039/C6CP02816K
Page Range:pp. 17810-17814
Publisher:Royal Society of Chemistry
ISSN:1463-9076
Status:Published
Keywords:lithium-ion, battery, Degradation, SEI
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrochemical Energy Storage
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Batteries) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Computational Electrochemistry
Deposited By: Single, Fabian
Deposited On:15 Dec 2016 15:33
Last Modified:06 Sep 2019 15:16

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