Stability of Garnet-Type Li7La3Zr2O12-Based Ceramics for All-Solid-State Batteries

• Autorzy: Yi Eun-Jeong , Yoon Keun-Young , Jung Hyun-Ah , Hwang Haejin

Identyfikatory

DOI

10.24425/amm.2019.127581

• Języki publikacji: EN

Abstrakty

EN

Al and Nb-doped Li₇ La₃ Zr₂O₁₂ (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.

Słowa kluczowe

EN

all-solid-state batteries; solid electrolytes; garnet type ceramics; ionic conductivity

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 579--583
• Opis fizyczny: Bibliogr. 21 poz., fot., rys., tab.

Twórcy

autor

Yi Eun-Jeong

• Inha University, Dep. Mater. Sci. & Eng., 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea

autor

Yoon Keun-Young

• Inha University, Dep. Mater. Sci. & Eng., 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea

autor

Jung Hyun-Ah

• Inha University, Dep. Mater. Sci. & Eng., 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea

autor

Hwang Haejin

• Inha University, Dep. Mater. Sci. & Eng., 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea

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Uwagi

EN

1. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2016R1A2B2011517). This work was also supported by the Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No. 20172420108680).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).