Characterization of Li1.5Al0.5Ge1.5(PO4)3 solid electrolyte with an added sintering aid

다국어 초록 (Multilingual Abstract)

In compliance with the current trends, lithium secondary batteries are gaining attention as next-generation eco-friendlyenergy sources. However, the conventional liquid electrolytes are limited by their propensity to cause explosions and fi res.
Several studies have been conducted on solid electrolytes owing to their stability and enlargement advantages. However,the mass production of solid electrolytes through the processing of crystallized glass is challenging because of the highcost, processing diffi culty, and extensive equipment requirements. The potential alternative strategy of using a molding andsintering manufacturing method is limited by performance degradation due to the presence of pores in the sintered body.
To improve the performance of the Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 solid electrolyte sintered body, Bi 2 O 3 was applied as a sinteringaid, which improved its physical and electrochemical characteristics. The addition amount of the sintering aid was varied todetermine the optimal sintering conditions. A characteristic evaluation was conducted using the as-determined conditions,and reliability was ensured by evaluating long-term chemical durability.