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High-energy and durable lithium metal batteries using garnet-type solid electrolytes with tailored lithium-metal compatibility

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Title
High-energy and durable lithium metal batteries using garnet-type solid electrolytes with tailored lithium-metal compatibility
Author(s)
Kim, S.; Kim, J.-S.; Miara, L.; Wang, Y.; Jung, S.-K.; Park, S.Y.; Song, Z.; Kim, H.; Badding, M.; Chang, J.M.; Roev, V.; Yoon, G.; Kim, R.; Kim, J.-H.; Yoon, K.; Im, D.; Kisuk Kang
Publication Date
2022-04
Journal
Nature Communications, v.13, no.1
Publisher
Nature Research
Abstract
Lithium metal batteries using solid electrolytes are considered to be the next-generation lithium batteries due to their enhanced energy density and safety. However, interfacial instabilities between Li-metal and solid electrolytes limit their implementation in practical batteries. Herein, Li-metal batteries using tailored garnet-type Li7-xLa3-aZr2-bO12 (LLZO) solid electrolytes is reported, which shows remarkable stability and energy density, meeting the lifespan requirements of commercial applications. We demonstrate that the compatibility between LLZO and lithium metal is crucial for long-term stability, which is accomplished by bulk dopant regulating and dopant-specific interfacial treatment using protonation/etching. An all-solid-state with 5 mAh cm−2 cathode delivers a cumulative capacity of over 4000 mAh cm−2 at 3 mA cm−2, which to the best of our knowledge, is the highest cycling parameter reported for Li-metal batteries with LLZOs. These findings are expected to promote the development of solid-state Li-metal batteries by highlighting the efficacy of the coupled bulk and interface doping of solid electrolytes. © 2022, The Author(s).
URI
https://pr.ibs.re.kr/handle/8788114/12048
DOI
10.1038/s41467-022-29531-x
ISSN
2041-1723
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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