Structure of Spontaneously Formed Solid-Electrolyte Interphase on Lithiated Graphite Determined Using Small-Angle Neutron Scattering
| العنوان: | Structure of Spontaneously Formed Solid-Electrolyte Interphase on Lithiated Graphite Determined Using Small-Angle Neutron Scattering |
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| المؤلفون: | Gabriel M. Veith, Anibal J. Ramirez-Cuesta, Lacy L. Jones, Nancy J. Dudney, Jose Banuelos, Yongqiang Cheng, Kenneth C. Littrell, Robert L. Sacci, Gernot Rother, Christoph Wildgruber |
| المصدر: | The Journal of Physical Chemistry C. 119:9816-9823 |
| بيانات النشر: | American Chemical Society (ACS), 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Materials science, Scattering, Electrolyte, Inelastic scattering, Neutron scattering, Small-angle neutron scattering, Inelastic neutron scattering, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, General Energy, chemistry, Chemical engineering, Graphite, Physical and Theoretical Chemistry, Ethylene carbonate, Nuclear chemistry |
| الوصف: | We address the reactivity of lithiated graphite–anode material for Li-ion batteries with standard organic solvents used in batteries (ethylene carbonate and dimethyl carbonate) by following changes in neutron scattering signals. The reaction produces a nanosized layer, the solid-electrolyte interphase (SEI), on the graphite particles. We probe the structure and chemistry of the SEI using small-angle neutron scattering (SANS) and inelastic neutron scattering. The SANS results show that the SEI fills 20–30 nm sized pores, and inelastic scattering experiments with H/D substitution show that this “chemical” SEI is primarily organic in nature; that is, it contains a large amount of hydrogen. The graphite–SEI particles show surface fractal scattering characteristic of a rough particle–void interface and are interconnected. The observed changes in the SEI structure and composition provide new insight into SEI formation. The chemically formed SEI is complementary and simpler in composition to the electrochemicall... |
| تدمد: | 1932-7455 1932-7447 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::d5ffb75725e47b78f5b4014ce8291e33 https://doi.org/10.1021/acs.jpcc.5b00215 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........d5ffb75725e47b78f5b4014ce8291e33 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 19327455 19327447 |
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