Journal
NANO ENERGY
Volume 76, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2020.105015
Keywords
Interfacial-assisted in-situ growth; Halide electrolyte Li3InCl6; Interfacial challenges; All-inorganic solid-state batteries
Categories
Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chair Program (CRC)
- Canada Foundation for Innovation (CFI)
- Ontario Research Fund
- China Automotive Battery Research Institute Co., Ltd
- GLABAT SolidState Battery Inc.
- Canada Light Source at University of Saskatchewan (CLS)
- University of Western Ontario
- Mitacs Elevate Postdoctoral Fellowship
- Mitacs Accelerate Fellowship
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All-inorganic solid-state batteries (AISSBs) have received considerable attention due to their excellent safety and high energy density. However, large interfacial challenges between oxide cathodes and inorganic solid electrolytes dramatically hinder AISSB development. Here we successfully eliminate the long-standing interfacial challenges by in-situ interfacial growth of a highly Li+-conductive halide electrolyte (Li3InCl6, LIC) on the cathode surface. Owing to strong interfacial interaction, high interfacial ionic conductivity (>1 mS cm(-1)), and excellent interfacial compatibility, LiCoO2 with 15 wt% LIC exhibits a high initial capacity of 131.7 mAh.g(-1) at 0.1C (1C = 1.3 mA cm(-2)) and can be operated up to 4C at room temperature. The discharge capacity retains 90.3 mAh g(-1) after 200 cycles. Moreover, a high areal capacity of 6 mAh cm(-2) is demonstrated with a high loading of 48.7 mg cm(-2). This work offers a versatile approach to eliminate interfacial challenges of AISSBs toward high-energy density and high-power density.
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