Morphology-Dependent Charge Storage by Micro/Nanostructured Silicon
摘要
This paper reports the charge-storing ability of silicon-based materials as electrode materials in energy storage devices. Microsized silicon (mSi) was used to prepare nanostructured silicon (nSi) through metal-assisted chemical etching (MACE) method. The physical morphology of the material was investigated utilizing scanning electron microscopy (SEM). Three electrode cell assemblies were used to test the electrochemical charge storage nature of the electrode material using 1 M KCl solution as electrolyte. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) revealed the pseudo-capacitive behavior of the fabricated material. The charge storage mechanism of silicon in the composite is discussed to understand the electrochemical behavior of the material.