The Manufacturing of Si-Based Alloy Anodes for Li-Ion Batteries by Mechanical Ball Milling Process

Wednesday, 31 May 2017
Grand Ballroom (Hilton New Orleans Riverside)
S. H. Hong, Y. Y. Chu, K. K. Lee, and H. K. Park (MKE)
Si-based alloy powders were studied as anode material for Li-ion battery (LIB). The Si-based alloy powders were manufactured by mechanical ball milling process. The ball milled Si-based alloy powders were incorporated graphite as a bufferring matrix to depress the volumetric change of an alloy electrode. We investigated structural and electorchemical properties of the Si-based alloy anodes. Consequently, we obtained good results having an excellent coloumbic efficiency of 85%. Also, we found not only a large initial capacity of 620mAh/g but also a high capacity retention of 90% at the 100th cycle.