Solid-state batteries are widely regarded as a primary contender for replacing conventional lithium-ion batteries in order to enhance the stability of electric vehicles. However, sulfide based solid electrolytes employed in solid-state batteries often suffer from inadequate oxidation-reduction stability and sub-reactions at the electrode/electrolyte interfaces, resulting in various issues. To address these challenges, researchers have proposed electrode surface coating methods, which offer potential benefits in terms of improving cycling stability and rate capability. In this paper, we conducted a deterministic analysis to explore the composition of a new Li-Zr-O and confirmed through various cathode coating material candidates that the lithium-ion conductor Li6Zr2O7 structure is highly promising. The findings underscore the necessity and feasibility of exploring various structures and compositions of electrode coating materials, rather than relying solely on conventional materials such as LiNbO3 and Li4Ti5O12.