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Ionic liquid-containing cathodes empowering ceramic solid electrolytes
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DOI：10.1016/j.isci.2022.103896.png)
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摘要
En 中文
Although ceramic solid electrolytes, such as Li7La3Zr2O12 (LLZO), are promising candidates to replace conventional liquid electrolytes for developing safe and high-energy-density solid-state Li-metal batteries, the large interfacial resistance between cathodes and ceramic solid electrolytes severely limits their practical application. Here we developed an ionic liquid ( IL)-containing while nonfluidic quasi-solid-state LiCoO2 (LCO) composite cathode, which can maintain good contact with an Al-doped LLZO (Al-LLZO) ceramic electrolyte. Accordingly the interfacial resistance between LCO and Al-LLZO was significantly decreased. Quasi-solid-state LCO/Al-LLZO/Li cells demonstrated relatively high capacity retentionof about 80% after 100 cycles at 60 degrees C. The capacity decay was mainly because of the instability of the IL. Nevertheless, the IL-containing LCO cathode enabled the use of Al-LLZO as a solid electrolyte in a simple and practical way. Identifying a suitable IL is critical for the development of quasi-solid-state Li-metal batteries with a ceramic solid electrolyte.
Keyword:
LITHIUM METAL ANODE
INTERFACIAL MODIFICATION
STATE ELECTROLYTE
ENERGY-STORAGE
RESISTANCE
BATTERIES
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4.1
论文数:
5.5K
被引数:
4.1W
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