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Amorphous SiO2/C as Anode for Lithium Ion Battery
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Author(s): Kydyr Askaruly (Laboratory of Engineering Profile, Satbayev University, Almaty, Kazakhstan), Seitkhan Azat (Laboratory of Engineering Profile, Satbayev University, Almaty, Kazakhstan)and Xintai Su (School of Environment and Energy, South China University of Technology, Guangzhou, China)
Copyright: 2025
Pages: 24
Source title:
Innovative Materials for Environmental and Aerospace Applications
Source Author(s)/Editor(s): Rachid Amrousse (University of Chouaib Doukkali, Morocco), Ahmed Bachar (Ibn Zohr University, Morocco), Assia Mabrouk (Ibn Zohr University, Morocco)and Seitkhan Azat (Satbayev University, Kazakhstan)
DOI: 10.4018/979-8-3373-0669-8.ch003
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Abstract
One of the main problems with graphite anodes in LIBs is the limited charge/discharge rate, especially for the lithization process. In recent years, in order to solve the above-mentioned problems, more and more attention has been paid to the practical use of silicon oxide-based anode materials in LIBs, due to its large amount in the earth's crust, low discharge potential, and high initial irreversible and reversible capacity of 1961 mA*h*g-1. The study explores a novel approach to producing high-purity SiO2 from rice husk (RH) and enhancing its electrochemical performance by incorporating a carbon coating, aiming to develop an advanced anode material for lithium-ion batteries (LIBs). The methodology involved a multi-step process: initially, RH was subjected to hydrochloric acid pre-treatment to remove impurities, followed by calcination to yield SiO2. Pure SiO2 was further processed with sodium hydroxide and hydrochloric acid to achieve high purity. To improve the electrochemical properties, SiO2 was coated with carbon derived from sucrose.
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