TY - JOUR N2 - Al and Nb-doped Li7La3Zr2O12 (LLZO) and W-doped LLZO lithium ion conducting electrolyte samples were prepared and their H2O stability was investigated. The LLZO samples were exposed to 50% humidified air for 48 h. After H2O exposure, a cubic to tetragonal transformation occurred and acquired SEM images exhibited the presence of reaction phases at the grain boundaries of Al and Nb-LLZO. As a result, the lithium ion conductivity significantly decreased after H2O exposure. On the contrary, W-LLZO showed good stability against H2O. Although the cubic to tetragonal transformation was also observed in H2O-exposed W-LLZO, the decrease in lithium ion conductivity was found to be modest. No morphological changes of the W-LLZO samples were confirmed in the H2O-exposed W-LLZO samples. L1 - http://journals.pan.pl/Content/111321/PDF/AMM-2019-2-24-Haejin%20Hwang.pdf L2 - http://journals.pan.pl/Content/111321 PY - 2019 IS - No 2 EP - 583 DO - 10.24425/amm.2019.127581 KW - All-solid-state batteries KW - solid electrolytes KW - garnet type ceramics KW - ionic conductivity A1 - Yi, Eun-Jeong A1 - Yoon, Keun-Young A1 - Jung, Hyun-Ah A1 - Hwang, Haejin PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 64 DA - 2019.06.27 T1 - Stability of Garnet-Type LI7LA3ZR2O12-Based Ceramics for All-Solid-State Batteries SP - 579 UR - http://journals.pan.pl/dlibra/publication/edition/111321 T2 - Archives of Metallurgy and Materials ER -