2015
DOI: 10.1016/j.jpowsour.2014.11.120
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Component-/structure-dependent elasticity of solid electrolyte interphase layer in Li-ion batteries: Experimental and computational studies

Abstract: The mechanical instability of the Solid Electrolyte Interphase (SEI) layer in lithium ion (Li-ion) batteries causes significant side reactions resulting in Li-ion consumption and cell impedance rise by forming further SEI layers, which eventually leads to battery capacity fade and power fade. In this paper, the composition-/structure-dependent elasticity of the SEI layer is investigated via Atomic Force Microscopy (AFM) measurements coupled with X-ray Photoelectron Spectroscopy (XPS) analysis, and atomistic ca… Show more

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Cited by 157 publications
(152 citation statements)
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“…Shang et al 187 computed the elastic properties of Li 2 CO 3 with DFT. With the integration of experimental and computational studies, Shin et al 188 gave the stiffness of dominant constituents in SEI in the order of LiF > Li 2 CO 3 > Li 2 EDC > LiMC > PEO. The stiffness decreases roughly from the inorganic components to the organic and then to the polymeric parts.…”
Section: Correlation Of Sei Properties With Battery Performance Starmentioning
confidence: 99%
See 1 more Smart Citation
“…Shang et al 187 computed the elastic properties of Li 2 CO 3 with DFT. With the integration of experimental and computational studies, Shin et al 188 gave the stiffness of dominant constituents in SEI in the order of LiF > Li 2 CO 3 > Li 2 EDC > LiMC > PEO. The stiffness decreases roughly from the inorganic components to the organic and then to the polymeric parts.…”
Section: Correlation Of Sei Properties With Battery Performance Starmentioning
confidence: 99%
“…The stiffness decreases roughly from the inorganic components to the organic and then to the polymeric parts. 188 According to the recent simulations with the APPLE&P force field, Li 2 BDC is less stiff than Li 2 EDC. 177 In addition to the bulk modulus, the work of adhesion is equally important for the SEI.…”
Section: Correlation Of Sei Properties With Battery Performance Starmentioning
confidence: 99%
“…Among the factors affecting the SEI layer's evolution, a strong dependence on temperature and state of charge has been proved to exist for its morphology, composition and Lithium ionic conductivity [7,37]. Continuum theory for the growth of an SEI layer have been recently proposed by many authors [128,180,181,182,183,184,77,185,186,187,188,189,190,191].…”
Section: Microscopic Phenomena and Their Modelingmentioning
confidence: 99%
“…This high degree of cross linking, in turn, implies that this polymeric matrix can have elastomeric properties. We remind that in a polymer, elasticity and high failure strain always requires a high degree of cross-linking.Estimates for bulk and shear moduli for different components of SEI obtained using atomic force spectroscopy and molecular dynamics calculations suggest that the polymeric matrix has the lowest elastic modulus of 1-2 GPa (compared to 10-20 GPa for lithium organocarbonates);55 . This can be compared with 40-70 GPa for the inner mineral layer of SEI on lithiated silicon 56.…”
mentioning
confidence: 99%