| 초록 |
All-solid-state lithium batteries are considered promising alternatives to current LIBs due to enhanced safety and high energy density. However, the fabrication of composite cathodes by conventional slurry process presents technical challenges, such as limited stability of sulfide electrolytes against organic solvents and increase of ionic resistance due to the use of polymer binder. In our study, we develop composite cathode using solvent-free process. The composite cathode is prepared with lithium ion-conducting ionomer binder. The ionomer facilitates Li-ion transport and ensures good interfacial contact between NCM712, conducting carbon, and solid electrolyte (argyrodite). Consequently, the cell with composite cathode delivers a high discharge capacity of 180.7 mAh/g and exhibits stable cycling performance, retaining 90% of its initial capacity after 300 cycles at 0.5 C. |
