Development of Thin Films of Amorphous Silicon for Anode Applications in Lithium Ion Batteries
Date of Graduation
Master of Science in Materials Science
Physics, Astronomy, and Materials Science
Lithium-ion (Li+) rechargeable batteries, compared to other popular rechargeable batteries, are the most promising candidates for electric vehicles and other uses for their high operating voltage, high energy, and high power density. In recent years, silicon based anode has attracted a lot of attention because of its high capacity of ~3579 mA h g-1 in its fully lithiated state. But the capacity of the silicon based anodes decreases drastically because lithiation results in a drastic increase of volume by 270% in silicon anode resulting in its destruction. In this work, I report the development of amorphous p-type Si thin films for anode applications grown by rf sputtering at 400oC using different rf power. Raman spectroscopy confirmed the presence of silicon. Half-cell reaction of p-type Si thin films was done using cyclic voltammetry to show the specific capacity of the anode. Voltammogram showed that current was decreasing with the increase of number of cycle of charging-discharging due to materials degradation.
rechargeable battery, thin films, silicon anode, sputtering, cyclic voltammetry
Materials Science and Engineering
© Shaikh Tofazzel Hossain
Hossain, Shaikh Tofazzel, "Development of Thin Films of Amorphous Silicon for Anode Applications in Lithium Ion Batteries" (2013). MSU Graduate Theses. 1591.