Abstract
Rare-earth (RE) solid-state halide electrolytes have been extensively studied recently in the field of lithium (Li) ion all-solid-state batteries (ASSBs) due to their excellent electrochemical performances. Herein, a new RE-based solid halide electrolyte Li3HoBr6 (LHB) has been synthesized and exhibits high Li ion conductivity up to mS cm-1 at room temperature. Theoretical calculations have identified four different Li ion migration pathways, in which the out-of-plane pathways are much more favorable than the direct in-plane pathways. In addition, LHB has a wider electrochemical window in comparison to a sulfide solid electrolyte and good deformability. The LHB-based Li-sulfur ASSB assembled by cold pressing can exhibit good cycling stability with high Coulombic efficiency, which shows that LHB has potential application in ASSBs.
Original language | English |
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Pages (from-to) | 9325-9331 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 21 |
Issue number | 21 |
DOIs | |
Publication status | Published - 10 Nov 2021 |
Keywords
- LiHoBr
- Lithium-Sulfur Battery
- Out-of-Plane Diffusion
- Rare Earth
- Solid Halide Electrolyte
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering