| 초록 |
As Li metal has a high specific capacity (3860 mAh/g) with the most negative electrode potential, its importance in high energy density storage systems is critically higher than any other anode candidates. As a result, Li metal anode has been adopted for advanced rechargeable battery such as Li metal battery, Li-S battery, Li air battery. However, there are several problems to be used as an anode, which called Li depletion including passivation layer (solid electrolyte interphase, SEI) and morphology changes. The growth of passivation layer and dendrite morphology on charging reaction requires excess Li, adding a severe penalty to the overall energy density of the system. Also, changes of morphology to needle like dendrite with cycle numbers could eventually penetrate the separator to reach the cathode, causing internal short-circuiting. Fundamental and much detailed study of Li metal is highly recommended. In this study, critical effects of Li metal anode on cycleability in Li-O2 batteries will be investigated. |
