| 초록 |
Although many approaches have been devoted so far to overcome the deep-rooted challenges of Li-metal anodes (LMAs), such as Li dendrite growth and poor Coulombic efficiency (CE), the LMAs further suffer from severe deterioration under practical conditions, triggering excessive swelling and low electrolyte utilization. To verify its superiority, making a practical LMB is now facing new rounds of difficulties in the innovation of materials and cell-level designs. In this talk, the cell design parameters will be discussed with more practical, vital issues inherent to Li-metal pouch cells by prototyping a 300 Wh/kg Li-metal pouch cell (1.0 Ah) with localized high-concentration electrolyte (LHCE). Based on findings at the cell level, we will discuss the materials design criteria for pouch cell size-up, ultrathin LMA, rational electrolyte formulations, and stable polyolefin separator. Furthermore, we will present the impact of cell exterior designs on mitigating LMA-driven cell swelling. |
