| 초록 |
Among the competitive materials for next-generation LiB anodes, Si based materials have attracted substantial interest as a high energy density anode due to their high theoretical capacity. Nevertheless, practical use of Si-based anode materials is obstructed owing to their drastic volume changes during the lithium insertion and extraction which result in capacity fading. Introducing nanopores could be an adequate approach to relieve volumetric tension. Nanoporous structure not only provides buffer space for volume changes but facilitates efficient transportation of Li ions and electrons. On the other hand, SiOx (x ＜ 2), contains nano-sized Si particles dispersed in a matrix of SiO2, has gradually adopted as compatible Si-based anode material. Based on the above-mentioned strategy, we synthesized ordered mesoporous Si/SiOx for LiB anode materials and Si nanoparticle embedded ordered mesoporous Si/SiOx nanocomposites. |
