报 告 人：Prof. Jou-hyounAhn（安柱炫）
Advanced energy storage devices have been a recent research focus owing to the rising demand for high energy density applications, including electric vehicles and energy storage systems. In order to satisfy the escalating energy demands, it is inevitable to improve the energy density of current Li-ion batteries. Previous reports on FeS cathodes are scarce and consist of an amorphous carbon matrix to accommodate the volume changes encountered during the cycling process. However, this inactive buffering matrix eventually increases the weight of the cell, reducing the overall energy density. By the rational design of this hybrid composite cathode, the presence of covalently bonded sulfur in SPAN guarantees high sulfur utilization, while effectively buffering the volume changes in FeS. Meanwhile, FeS can compensate for the conductivity issues in the SPAN, thereby realizing a synergistically driven dual active cathode material improving the overall energy density of the composite.