Simulation and Experiment on Solid Electrolyte Interphase (SEI) Morphology Evolution and Lithium-Ion Diffusion
By Pengjian Guan, Lin Liu, Xianke Lin. 2015
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Inthisstudy,aphase-fieldmodelisdevelopedtosimulatethemicrostructuremorphologyevolutionthatoccursduringsolidelectrolyteinterphase(SEI)growth.Comparedwithothersimulationmethodologies,thephase-fieldmethodhasbeenwidelyappliedinthesolidificationmodelingthathasgreatrelevancetoSEIformation.ThedevelopedmodelcansimulateSEIstructureandmorphologyevolution,andcanpredictSEIthicknessgrowthrate.X-rayphotoelectronspectroscopy(XPS)experimentsareperformedtoconfirmthemajorSEIspeciesasLiF,Li 2 O, ROLi, and ROCO 2 Li. Transmission electron microscopy (TEM) experiment is performed to present the SEI layer structures. The experiments reduce the complexity of the model development and provide validation to some extent. Fick’s law and mass balance are applied to investigate lithium-ion concentration distributions and diffusion coefficients in different types of SEI layers predicted by the phase-field simulations. Simulation results show that lithium-ion diffusion coefficients between 298 K and 318 K are 1.340–7.328(10 − 16 ) cm 2 /s, 1.734–3.405(10 − 12 ) cm 2 /s, and 2.611–2.389(10 − 15 ) cm 2 /s in the compact, porous, and multilayered structures of SEI layer, respectively. The resistances between 298 K and 318 K are 0.740–1.693 (cid:2) · cm 2 , 2.827–5.517 (cid:2) · cm 2 , and 3.726–5.839 (cid:2) · cm 2 in the compact, porous, and multilayered structures of SEI layer, respectively. © The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/c2857e17e6c73295e2c451cf19605a56f188ec5b
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In Electrical and Electronic Engineering
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Numerical simulation of the factors affecting the growth of lithium dendrites (2019, unknown): “According to the experimental study on the porosity of SEI by Guan [20], as shown in Fig.”
- Review on modeling of the anode solid electrolyte interphase (SEI) for lithium-ion batteries (2018, methodology): “The multi-layer-mosaic growth model of SEI developed by Guan et al.(209) with the phase-field method fits the experimental work done by Tang et al.”