| 초록 |
Graphite and hard carbons are commonly used as a negative electrode material for LIBs, but higher-capacity alternatives are being consistently sought due to their limited capacity as an anode material of next generation LIBs for large-scale power applications. Up to now, various Si, and Sn based compound including transition metal oxide, multiphase alloy, and intermetallic compounds have been extensively studied as alternatives to the existing carbon based anode material. These materials show much higher capacities than those of carbonaceous material. However, they are suffering from huge lattice volume change (4.4Li+Si→Li4.4Si, ΔV＞300%) through conversion reaction mechanism during Li insertion, which results in poor cycle life of LIBs. In this talk, the recent development trend on new anode material will be introduced and extensively discussed with current status of KERI. |
