Cost-effective production of SiO2/C and Si/C composites derived from rice husk for advanced lithium-ion battery anodes

Ultrafast-charging and long cycle-life anode materials of TiO2-bronze/nitrogen-doped graphene nanocomposites for high-performance lithium-ion batteries

“…N-doped graphene synthesis N-doped graphene, using a method previously developed by our group 34,35 was synthesized using graphite powder as a precursor.…”

Green and Facile Synthesis of Porous SiO2@C Adsorbents from Rice Husk: Preparation, Characterization, and Their Application in Removal of Reactive Red 120 in Aqueous Solution

“…In the previous work, it was concluded that a large volume of micropores and mesopores should increase pollutant diffusion through internal pores. 38 Thus, it was very beneficial for the electrode materials of supercapacitors/LIBs 7,23 or effective adsorbents for the removal of pollutants in aqueous solutions. The presence of functional groups was also affirmed by FT-IR spectra as illustrated in Figure 4d.…”

Zincothermic-Reduction-Enabled Harvesting of an Si/C Composite from Rice Husks for a Li-Ion Battery Anode

“…Thus, extracting Si- or C-based materials from Si-containing plants for energy storage materials has attracted immense attention. Among the various Si-containing biomasses, rice husk is a typical biomass resource generated from the rice production process and mainly consists of organic matter (75–80% lignin, cellulose, and half-cellulose) and a high concentration of silica (15–20%), which makes it a valuable resource for both Si and C materials. , However, simultaneously extracting the C and Si elements from rice husks inevitably generates unwanted SiC when a metallothermic reduction is employed. − Because the C and Si can react spontaneously on the basis of thermodynamics the carbide formation occurs easily at a high temperature. − More recently, a low-temperature AlCl 3 -assisted Mg and Al metallothermic reduction to prepare Si nanoparticles has been developed by Lin et al, in which AlCl 3 is a key component to enable the reduction. Recently, Yin et al revealed the chlorination role of AlCl 3 in the process of the metallothermic reduction of SiO 2 and verified this mechanism using zinc (Zn) as the reducing agent .…”