Pragmatic Approach to Design Silicon Alloy Anode by the Equilibrium Method
| العنوان: | Pragmatic Approach to Design Silicon Alloy Anode by the Equilibrium Method |
|---|---|
| المؤلفون: | Hyang-Yeon Kim, Nurzhan Umirov, Deok-Ho Seo, Sung-Soo Kim |
| المصدر: | ACS Applied Materials & Interfaces. 12:17406-17414 |
| بيانات النشر: | American Chemical Society (ACS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Silicon, 020209 energy, chemistry.chemical_element, 02 engineering and technology, 021001 nanoscience & nanotechnology, Anode, Silicon alloy, chemistry, Amorphous matrix, 0202 electrical engineering, electronic engineering, information engineering, Energy density, General Materials Science, Graphite, Melt spinning, Composite material, 0210 nano-technology, Nano silicon |
| الوصف: | Silicon fascinates with incredibly high theoretical energy density as an anode material and considered as a primary candidate to replace well-established graphite. However, further commercialization is hindered by the abnormal volume changes of Si in every single cycle. Silicon embedded in a buffer matrix using the melt-spinning process is a promising approach; however, its metastable nature significantly reduces the microstructure homogeneity, the quality of the composition, and, therefore, the electrochemical performances. Herein, we developed a new approach to design a high-performance Si-alloy with improved microstructure uniformity and electrochemical properties. Namely, annealing at a certain temperature of the melt-spun amorphous alloy ribbon allowed us to evenly distribute Si nanocrystallites in the microstructure with control of average grain size. As a result, the Si-alloy electrode delivers an initial discharge capacity of 900 mAh g |
| تدمد: | 1944-8252 1944-8244 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6224d40aa9db57d980bca7bfa6f8de3dTest https://doi.org/10.1021/acsami.9b21997Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....6224d40aa9db57d980bca7bfa6f8de3d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19448252 19448244 |
|---|