Synthesis of Si Nanowires for an Anode Material of Li Batteries

摘要

The work encompassed the study of new alloy anode material for the next generation of Li ion battery. The alloy includes Li alloy with Sn, Al and Si. It has been reported that the Li4.4Si alloy can have the theoretical capacity of 4200 mAhr/g, which is much higher than the capacity of the graphite. However, in spite of the theoretical prediction, the immense volume increase, thus capacitance decrease occurred during charging and discharging. Therefore, the work focused on the study of morphological and volume change of the Li Si alloy electrodes. The result of the study is expected to contribute to the future work of the Li alloy anode development for the improved capacitance.