| 초록 |
Flammable organic liquid electrolytes that have low ignition point and low thermal stability can cause explosion accidents. To resolve the safety issues, solid electrolytes become an excellent candidate. LATP is one of promising solid electrolyte due to its good ionic conductivity and chemical stability against water but it suffers from low density of sintered body. Most of previous works have adopted hot press sintering and spark plasma sintering to alleviate the density issue, although those processes are not cost-effective. In this work, we introduced a single step pressureless sintering to anneal the LATP ceramics with a good density and ionic conductivity in a simple process. We fabricated LATP ceramics with over 93% density at ambient pressure using single step pressureless sintering process, which is an improvement over recent studies on LATP pressureless sintering. Fabricated LATP samples were assembled in Li/PEO/LATP/PEO/Li symmetric cells and tested. |
