期刊
NANO ENERGY
卷 72, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.104686
关键词
Interfacial ionic conductivity; Ion transport kinetics; Li+ diffusivity; All-solid-state batteries
类别
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chair Program (CRC)
- Canada Foundation for Innovation (CFI)
- Ontario Research Fund (ORF)
- China Automotive Battery Research Institute Co., Ltd.
- Glabat Solid-State Battery Inc.
- Canada Light Source (CLS) at University of Saskatchewan
- Interdisciplinary Development Initiatives (IDI) by Western University
- University of Western Ontario
- Mitacs Elevate Postdoctoral Fellowships
- Center for Functional Nanomaterials, U.S. DOE Office of Science Facility, at Brookhaven National Laboratory [DE-SC0012704]
Advancement of all-solid-state lithium-ion (Li+) batteries (ASSLIBs) has been hindered by the large interfacial resistance mainly originating from interfacial reactions between oxide cathodes and solid-state sulfide electrolytes (SEs). To suppress the interfacial reactions, an interfacial coating layer between cathodes and SEs is indispensable. However, the kinetics of interfacial Li+ transport across the coating layer has not been well understood yet. Herein, we tune the interfacial ionic conductivity of the coating layer LiNb0.5Ta0.5O3 (LNTO) by manipulating post-annealing temperature. It is found that the interfacial ionic conductivity determines interfacial Li+ transport kinetics and enhancing the interfacial ionic conductivity can significantly boost the electrochemical performance of SE-based ASSLIBs. A representative cathode LiNi0.5Mn0.3Co0.2O2 coated by LNTO with the highest interfacial ionic conductivity exhibits a high initial capacity of 152 mAh.g(-1) at 0.1 C and 107.5 mAh. g(-1) at 1 C. This work highlights the importance of increasing interfacial ionic conductivity for high-performance SE-based ASSLIBs.
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