Lithium-stable NASICON-type lithium-ion conducting solid electrolyte film coated with a polymer electrolyte

Interface Between Solid-State Electrolytes and Li-Metal Anodes: Issues, Materials, and Processing Routes

“…Polymers and thin-film solid-state electrolytes are always employed to fix the interfacial side reaction because of their electronic insulative properties . Polymers and thin-film solid-state electrolytes are always coated on NASICON or LGPS to prevent the continuous growth of MCI, , although the limited ionic conductivity of polymers and thin-film solid-state electrolyte makes them difficult to decrease interfacial resistance. Longer life span can be expected if proper materials are coated on the anode side of the SSEs.…”

Interface modification of NASICON-type Li-ion conducting ceramic electrolytes: a critical evaluation

“…The cell assembled by Jin and colleagues with polymer layer depicted the significant improvements where reduction of interfacial resistance was monitored and the symmetric cell performed for 400 hours at low current density (0.05 mA cm -2 ) 110 . The symmetric cell with composite interlayer exhibited cycling only for 100 hours with a higher current density of 0.5 mA cm -2 , and it was reached at 60 o C 100 . There have been reports on other types of complex polymer materials.…”

“…Thus, there have been works that put stress on the problem of the NASICON-type electrolyte towards Li by coating it with PEO. designed a comprehensive composite layer out of PEO, an ionic liquid and oxide filler of BaTiO 3 (or SiO 2 ) for LAGTP 100 . All three reports concentrated on decreasing the interfacial impedance of Li and solid electrolyte along with addressing the side reaction issue.…”

“…Along with the inorganic protection layer coatings, there have been numerous works that endeavored to use polymer films that have high ionic conductivity and electron insulating nature as a physical barrier for this purpose as well, which offer additional benefits because of their unique properties such as flexibility, high degree of adhesion and dendrite growth prevention. 100,101 The polymers containing Li salts are promising candidates for interface advancements in all-solid-state batteries owing to their high stability towards Li metal and space-charge suppression at the interface. [102][103][104] Salt containing/liquid containing polymer materials wet the surface of Li metal and minimize interfacial resistance and create very intimate contact and fill the gap at the electrolyte and electrode surface.…”

“…110 Koizumi et al designed a comprehensive composite layer out of PEO, an ionic liquid and oxide filler of BaTiO 3 (or SiO 2 ) for LAGTP. 100 All three reports concentrated on decreasing the interfacial impedance of Li and solid electrolyte along with addressing the side reaction issue. Cai et al achieved a decrease of interfacial impedance from 30 000 113 to 280 ohm cm À1 by drop casting the polymer on the ceramic pellet.…”