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Preparation of high-density garnet thin sheet electrolytes for all-solid-state Li-Metal batteries by tape-casting technique
Gao, Kangning; He, Minghui; Li, Yiqiu; Zhang, Yipeng; Gao, Jun; Li, Xixiang; Cui, Zhonghui; Zhan, Zhongliang; Zhang, Tao
2019-06-30
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume791Pages:923
SubtypeArticle
AbstractGarnet electrolyte is a promising candidate for the development of all-solid-state Li-metal batteries, because of its safety and stability against Li metal. However, its practical application is limited by the difficulty in production of its high-density thin sheet. In this work, we have fabricated garnet thin sheet electrolytes (Li6.4La3Zr1.4Ta0.6O12, LLZTO) by tape-casting technique. By using Li2O as a liquid-phase sintering additive, a high relative density up to 99% was achieved. Electrochemical results show the LLZTO sheets have an ionic conductivity of 5.2 x 10(-4) S cm(-1 )at 30 degrees C and good cycling stability against Li metal. Based on the sheets, all-solid-state Li/LLZTO/LiFePO4 batteries exhibit excellent reversible cycles at 60 degrees C and 0.1C with an initial discharge specific capacity of 125.8 mA h g(-1) and a retention of 92.3% after 50 cycles. These results indicate that the tape-casting process demonstrated here provides an effective method of producing high-density garnet thin sheet electrolytes for high-performance all-solid-state Li-metal batteries. (C) 2019 Elsevier B.V. All rights reserved.
KeywordLi6.4La3Zr1.4Ta0.6O12 Thin sheet electrolyte Tape-casting technique Liquid-phase sintering All-solid-state Li-Metal battery
DOI10.1016/j.jallcom.2019.03.409
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27033
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Gao, Kangning,He, Minghui,Li, Yiqiu,et al. Preparation of high-density garnet thin sheet electrolytes for all-solid-state Li-Metal batteries by tape-casting technique[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,791:923.
APA Gao, Kangning.,He, Minghui.,Li, Yiqiu.,Zhang, Yipeng.,Gao, Jun.,...&Zhang, Tao.(2019).Preparation of high-density garnet thin sheet electrolytes for all-solid-state Li-Metal batteries by tape-casting technique.JOURNAL OF ALLOYS AND COMPOUNDS,791,923.
MLA Gao, Kangning,et al."Preparation of high-density garnet thin sheet electrolytes for all-solid-state Li-Metal batteries by tape-casting technique".JOURNAL OF ALLOYS AND COMPOUNDS 791(2019):923.
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