نتایج جستجو برای: magnesiothermic reduction
تعداد نتایج: 491795 فیلتر نتایج به سال:
The silicon nanostructure is a promising candidate for an anode of Li-ion batteries due to its high theoretical capacity. In this work, we have demonstrated the scalable synthesis of Si nanosheets from natural sand by magnesiothermic reduction, and suggested a new formation mechanism for Si nanosheets. In the suggested mechanism, an Mg₂Si intermediate phase was formed at an early stage of the r...
Herein, facile synthesis of monodisperse silicon and carbon nanocomposite spheres (MSNSs) is achieved via a simple and scalable surface-protected magnesiothermic reduction with subsequent chemical vapor deposition (CVD) process. Li-ion batteries (LIBs) were fabricated to test the utility of MSNSs as an anode material. LIB anodes based on MSNSs demonstrate a high reversible capacity of 3207 mAh ...
The comprehensive utilization of Si-rich biomass is restrained by macromolecular lignin and a large amount ash. In this study, rice husks (RHs) are treated as representative alkali extraction acid precipitation, the obtained lignin-SiO2 composite modified carbonazation, ball milling, magnesiothermic reduction additives. Through these processes, Si/C with excellent electrochemical properties per...
Silicon has a large specific capacity which is an order of magnitude beyond that of conventional graphite, making it a promising anode material for lithium ion batteries. However, the large volume changes (∼ 300%) during cycling caused material pulverization and instability of the solid-electrolyte interphase resulting in poor cyclability which prevented its commercial application. Here, we hav...
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