Preparation and Characterization of 3D Porous Silicon Anode Material for Lithium-Ion Battery Application

Three-dimensional (3D) Si materials with interconnected pores have been synthesized and used applied in lithium-ion batteries (LIBs) as anode material via a conventional method of sputtering, thermal evaporation. The result was found to be satisfactory regarding the device performance. In this work, porous Si materials have been prepared as active material using silicon powder and proppant and characterized using scanning electron microscopy (SEM), x-ray diffraction (XRD) and Raman spectroscopy techniques. 3D porous Si products coated onto Cu current collector led to enhanced surface area and energy density in LIB. The performance of LIB cells is evaluated via electrochemical characterization. The 3D porous Si materials in LIB exhibited better capacitance and cyclic performance than Si powder anode. The battery offers a discharge capacity of 267.1 mAh g(-1) at 298 mA g(-1) with a capacity retention of 95.5% after 50 cycles and the battery capacity remains stable between 40-50 cycles.