Utilizing rice husk-derived Si/C composites to enhance energy capacity and cycle sustainability of lithium-ion batteries
Askaruly K. Idrissov N. Abdisattar A. Azat S. Kuli Z. Yeleuov M. Malchik F. Daulbayev C. Yszhan Y. Sarsembayeva B. Nysanbayeva S.
November 2024Elsevier Ltd
Diamond and Related Materials
2024#149
Traditional graphite anodes have a specific capacity of approximately 372 mAh/g, whereas silicon presents a promising alternative with theoretical capacities reaching up to 4200 mAh/g. However, substantial volumetric changes in silicon during lithiation lead to rapid degradation of capacitance. This study explores the utilization of rice husk, an abundant agricultural waste, as a raw material for Si/C composites. Rice husk inherently contains significant amounts of silicon and carbon, rendering it a sustainable and economical source. The activated carbon was derived from rice husk by carbonization and thermochemically activation with activation temperature of 850 °C and KOH agent. The silicon dioxide was derived from rice husk by subjecting to annealing in a muffle furnace at 650 °C for 4 h following NaOH and HCl solution treatment. The silicon was derived from silicon dioxide by thermomagnesium treatment in a tube furnace at 700 °C for 120 min. SEM, elemental analysis, XRD, Raman, and FT-IR were used to characterize the materials to evaluate their morphological and structural composition. Electrochemical performance evaluation demonstrated improved energy capacity and stability, highlighting rice husk-derived Si/C composites as a viable solution for advancing lithium-ion battery performance. This innovative approach not only lowers production costs but also supports sustainable development by effectively utilizing agricultural waste.
Activated carbon , Composite , lithium-ion battery , Rice husk , Silicon
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Satbayev University, Almaty, Kazakhstan
Institute of Combustion Problems, Almaty, Kazakhstan
BesSaiman Group, Almaty, Kazakhstan
Almaty University of Power Engineering and Telecommunications, Almaty, Kazakhstan
Institute of Nuclear Physics, Almaty, Kazakhstan
Center of Physical-Chemical Methods of Research and Analysis, Farabi University, Almaty, Kazakhstan
Engineering and Science Hub, Almaty, Kazakhstan
Satbayev University
Institute of Combustion Problems
BesSaiman Group
Almaty University of Power Engineering and Telecommunications
Institute of Nuclear Physics
Center of Physical-Chemical Methods of Research and Analysis
Engineering and Science Hub
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