期刊
NANO ENERGY
卷 92, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2021.106674
关键词
Electrochemical stability; Ion conductivities; Halides; Solid-state electrolytes; All solid-state batteries
类别
资金
- Innovation Fund Project of GRINM [2020TS0301]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chair Program (CRC)
- Western University
- Guangdong Provincial Science and Technology Commission, Guangdong Key Area RD Program [2020B0909030004]
- Youth Fund Project of GRINM [G12620203129015]
- Beijing Natural Science Foundation Committee, Haidian Original Innovation Joint Fund Project [L182023]
- Beijing Outstanding Talents Youth Funding Scheme [2018000097607G375]
This study introduces a multi-metal chloride solid-state electrolyte with excellent electrochemical stability and high ionic conductivity, which, combined with high-performance cathodes and high-voltage electrolytes, demonstrates superior electrochemical performance for all-solid-state batteries.
All-solid-state batteries (ASSBs) have gained substantial attention because of their intrinsic safety and potentially high energy density. To enable ASSBs, developing solid-state electrolytes (SSEs) with high electrochemical stability is of foremost significance. Here we report a multi-metal chloride SSEs with an excellent electrochemical stability (up to 4.5 V vs. Li+/Li), which originates from the strong Zr-Cl bonding. In addition, a high room temperature ionic conductivity of 1.58 mS/cm was achieved via increasing the Li vacancies in the structure as well as balancing carrier and vacancy concentration. Coupled with nickel-rich cathodes (LiNi0.83Co0.12Mn0.05O2) and high-voltage LiCoO2 (4.5 V vs. Li+/Li), ASSBs demonstrated superb electrochemical performance. This work provides an in-depth structural understanding of multi-metal chloride SSEs and feasible strategies to realize highenergy-density ASSBs.
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