Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 18, Issue 27, Pages 17810-17814Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cp02816k
Keywords
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Funding
- German Federal Ministry of Education and Research (BMBF) [03X4636A]
- bwHPC initiative
- bwHPC-C5 project through associated compute services of the JUSTUS HPC facility at the University of Ulm
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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 transportmechanism. 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.
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