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Multifunctional Interface for High-Rate and Long-Durable Garnet-Type Solid Electrolyte in Lithium Metal Batteries

Cited 70 time in Web of Science Cited 70 time in Scopus
Authors

Lee, Kyeongsu; Han, Sangwook; Lee, Jeongmin; Lee, Sunyoung; Kim, Jongmin; Ko, Youngmin; Kim, Sewon; Yoon, Kyungho; Song, Jun-Hyuk; Noh, Joo Hyeon; Kang, Kisuk

Issue Date
2022-01
Publisher
AMER CHEMICAL SOC
Citation
Acs Energy Letters, Vol.7 No.1, pp.381-389
Abstract
Lithium dendrite growth in solid electrolytes is one of the major obstacles to the commercialization of solid-state batteries based on garnet-type solid electrolytes. Herein, we propose a strategy that can simultaneously resolve both the interface and electronic conductivity issues via a simple one-step procedure that provides multilayer protection at low temperature. We take advantage of the facile chemical conversion reaction, showing the wet-coated SnF2 particles on the solid electrolyte effectively produces a multifunctional interface composed of LiF and Li-Sn alloy upon contact with lithium. We demonstrate the multifunctional interface enables the remarkably high critical current density up to 2.4 mA cm(-2) at 25 degrees C and the stable galvanostatic cycling for over 1000 h at 0.5 mA cm(-2) in the lithium symmetric cell. Moreover, the full cell delivers a robust cycle life of more than 600 cycles at 1.0 mA cm(-2), which is the highest performance at room temperature reported to date.
ISSN
2380-8195
URI
https://hdl.handle.net/10371/179803
DOI
https://doi.org/10.1021/acsenergylett.1c02332
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Materials Science and Engineering (재료공학부)Journal Papers (저널논문_재료공학부)
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