Dynamics and morphology of solid electrolyte interphase (SEI)
- 13 June 2016
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Physical Chemistry Chemical Physics
- Vol. 18 (27), 17810-17814
- https://doi.org/10.1039/c6cp02816k
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.Keywords
Funding Information
- Bundesministerium für Bildung und Forschung (03X4636A)
This publication has 48 references indexed in Scilit:
- Anodic Oxidation of Conductive Carbon and Ethylene Carbonate in High-Voltage Li-Ion Batteries Quantified by On-Line Electrochemical Mass SpectrometryJournal of the Electrochemical Society, 2015
- A joint experimental and theoretical determination of the structures of oxidized and reduced moleculesElectrochemistry Communications, 2012
- A review of the features and analyses of the solid electrolyte interphase in Li-ion batteriesElectrochimica Acta, 2010
- A review on electrolyte additives for lithium-ion batteriesJournal of Power Sources, 2006
- Main aging mechanisms in Li ion batteriesJournal of Power Sources, 2005
- Ageing mechanisms in lithium-ion batteriesJournal of Power Sources, 2005
- Solvent Diffusion Model for Aging of Lithium-Ion Battery CellsJournal of the Electrochemical Society, 2004
- Review of selected electrode–solution interactions which determine the performance of Li and Li ion batteriesJournal of Power Sources, 2000
- On the correlation between surface chemistry and performance of graphite negative electrodes for Li ion batteriesElectrochimica Acta, 1999
- Recent studies on the correlation between surface chemistry, morphology, three-dimensional structures and performance of Li and Li-C intercalation anodes in several important electrolyte systemsJournal of Power Sources, 1997