Role of silicon and carbon on the structural and electrochemical properties of Si-Ni$_{3.4}$Sn$_4$-Al-C anodes for Li-ion batteries
| العنوان: | Role of silicon and carbon on the structural and electrochemical properties of Si-Ni$_{3.4}$Sn$_4$-Al-C anodes for Li-ion batteries |
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| المؤلفون: | Michel Latroche, Thierry Hezeque, Christian Jordy, Claire Thaury, Tahar Azib, Fermin Cuevas, Cécile Fariaut-Georges |
| المساهمون: | Institut de Chimie et des Matériaux Paris-Est (ICMPE), Institut de Chimie du CNRS (INC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), SAFT [Bordeaux], Société des accumulateurs fixes et de traction (SAFT) |
| المصدر: | Materials Today Communications Materials Today Communications, Elsevier, 2020, pp.101160. ⟨10.1016/j.mtcomm.2020.101160⟩ |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Silicon, Scanning electron microscope, Intermetallic, FOS: Physical sciences, chemistry.chemical_element, Nanoparticle, Li-ion batteries, 02 engineering and technology, 010402 general chemistry, Electrochemistry, 01 natural sciences, Phase (matter), Physics - Chemical Physics, Materials Chemistry, General Materials Science, Ball mill, Chemical Physics (physics.chem-ph), Condensed Matter - Materials Science, mechanical milling, intermetallic compounds, anodes, Materials Science (cond-mat.mtrl-sci), silicon, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Chemical engineering, Mechanics of Materials, 0210 nano-technology, Carbon |
| الوصف: | Varying the amounts of silicon and carbon, different composites have been prepared by ball milling of Si, Ni$_{3.4}$Sn$_4$, Al and C. Silicon and carbon contents are varied from 10 to 30 wt.% Si, and 0 to 20 wt.% C. The microstructural and electrochemical properties of the composites have been investigated by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and electrochemical galvanostatic cycling up to 1000 cycles. Impact of silicon and carbon contents on the phase occurrence, electrochemical capacity and cycle-life are compared and discussed. For C-content comprised between 9 and 13 wt.% and Si-content >= 20 wt.%, Si nanoparticles are embedded in a Ni$_{3.4}$Sn$_4$-Al-C matrix which is chemically homogeneous at the micrometric scale. For other carbon contents and low Si-amount (10 wt.%), no homogeneous matrix is formed around Si nanoparticles. When homogenous matrix is formed, both Ni$_3$Sn$_4$ and Si participate to the reversible lithiation mechanism, whereas no reaction between Ni$_3$Sn$_4$ and Li is observed for no homogenous matrix. Moreover, best cycle-life performances are obtained when Si nanoparticles are embedded in a homogenous matrix and Si-content is moderate ( |
| اللغة: | English |
| تدمد: | 2352-4928 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6408f7f912fbb536ce1d5a1ac9fbdfa http://arxiv.org/abs/2006.12552 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....a6408f7f912fbb536ce1d5a1ac9fbdfa |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23524928 |
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