| 초록 |
Li-metal have been attracted much attention, as their outstanding specific capacities (3,860 mAh/g) and low redox potential (-3.04 V vs. SHE) can significantly increase the energy level of cells beyond those of current lithium ion batteries. Nevertheless, the current research is still at the premature stage due to the unwanted side reactions with electrolyte and the dead Li formation, mainly caused by uncontrollable Li dendrite growth. In order to circumvent this fatal issue, in this talk, material design strategies are introduced to improve coulombic efficiency and stability of Li-metal batteries: (1) Electrical conductivity-controlled 3D structure guiding bottom deposition of Li. (2) Electrospun 1D hollow carbon nanofiber that can store Li inside the core space. (3) High-concentration dual-salt electrolyte with high LiNO3 content. We hope that this talk provides a useful insight for designing materials with high efficiency and thus developing high-performance Li-metal batteries. |
