Li-ion batteries (LIBs) are widely used to store energy for mobile devices such as smart phones, tablets, and laptop computers, because they possess high energy densities and excellent cycling characteristics. The high affinity of PAA for SiO x in RHC was responsible for the stabilization of the anodic performance of Li-ion batteries. The PAA binder strengthened the electrode and alleviated the increase in electrode resistance caused by the formation of the interphase film. The RHC electrode fabricated using PAA exhibited higher specific capacity for Li-ion extraction during the cycling test. Impedance analysis was conducted to identify the source of the increase in the resistance of the RHC electrodes. The cell was shorted for 24 h to completely lithiate the RHC. The rate and cycling performances of the RHC electrodes with respect to the insertion/extraction of Li ions were evaluated in a half-cell configuration. To find a suitable binder for RHC, the RHC-based electrodes were fabricated using two different contemporary aqueous binders: polyacrylic acid (PAA) and a combination of carboxymethyl cellulose and styrene butadiene rubber (CMC/SBR). In this work, a RH-derived C/SiO x composite (RHC) was prepared by carbonization at 1000 ☌ for use in Li-ion battery anodes. Rice husk (RH) is a globally abundant and sustainable bioresource composed of lignocellulose and inorganic components, the majority of which consist of silicon oxides (approximately 20% w/w in dried RH).

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