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Title: Electrochemical and interfacial behavior of all solid state batteries using Li 10SnP 2S 12 solid electrolyte

Thio-Lithium Superionic Conductor (Thio-LISICON) Li 10GeP 2S 12 equivalent Li 10SnP 2S 12 (LSPS) is comparable in ionic conductivity yet with a lower cost as an electrolyte for all solid-state batteries (ASSBs). In this study, ASSBs with LSPS solid electrolyte (SE), lithium-indium alloy anode, and LiCoO 2 (LCO) cathode were successfully fabricated and their electrochemical performance at 60 °C was examined. Atomic layer deposition of Li 3NbO 4 on LCO was conducted to improve the interfacial stability. The Li 3NbO 4 coating effectively improves the cycle stability of the ASSB. Electrochemical impedance spectroscopy tests indicate a rapid growth of charge transfer resistance upon cycling for the cell with the uncoated LCO, primarily due to the surface instability and build-up of a space charge layer. However, the ASSBs with Li 3NbO 4 coated LCO show a more stable interface with a negligible impedance increase upon cycling, attributable to the buffering and passivating roles of the Li 3NbO 4 coating. Lastly, the interfacial microstructure was analyzed to elucidate at the underlying reasons for the impedance increase and the pivotal role of the Li 3NbO 4 coating.
Authors:
 [1] ;  [1] ;  [2] ; ORCiD logo [3] ;  [1] ;  [2] ;  [1]
  1. Univ. of Washington, Seattle, WA (United States). Materials Science and Engineering Department
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
  3. General Motors R&D Center, Warren, MI (United States). Chemical Sciences and Materials Systems Lab
Publication Date:
Report Number(s):
PNNL-SA-132845
Journal ID: ISSN 0378-7753; PII: S0378775318306347
Grant/Contract Number:
AC05-76RL01830; EE0007787; AC02-05CH11231; 18769; 6951379
Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 396; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE; Li10SnP2S12; All-solid-state battery; Solid electrolyte; Atomic layer deposition; Interfacial stability
OSTI Identifier:
1457752

Vinado, Carolina, Wang, Shanyu, He, Yang, Xiao, Xingcheng, Li, Yun, Wang, Chongmin, and Yang, Jihui. Electrochemical and interfacial behavior of all solid state batteries using Li10SnP2S12 solid electrolyte. United States: N. p., Web. doi:10.1016/J.JPOWSOUR.2018.06.038.
Vinado, Carolina, Wang, Shanyu, He, Yang, Xiao, Xingcheng, Li, Yun, Wang, Chongmin, & Yang, Jihui. Electrochemical and interfacial behavior of all solid state batteries using Li10SnP2S12 solid electrolyte. United States. doi:10.1016/J.JPOWSOUR.2018.06.038.
Vinado, Carolina, Wang, Shanyu, He, Yang, Xiao, Xingcheng, Li, Yun, Wang, Chongmin, and Yang, Jihui. 2018. "Electrochemical and interfacial behavior of all solid state batteries using Li10SnP2S12 solid electrolyte". United States. doi:10.1016/J.JPOWSOUR.2018.06.038.
@article{osti_1457752,
title = {Electrochemical and interfacial behavior of all solid state batteries using Li10SnP2S12 solid electrolyte},
author = {Vinado, Carolina and Wang, Shanyu and He, Yang and Xiao, Xingcheng and Li, Yun and Wang, Chongmin and Yang, Jihui},
abstractNote = {Thio-Lithium Superionic Conductor (Thio-LISICON) Li10GeP2S12 equivalent Li10SnP2S12 (LSPS) is comparable in ionic conductivity yet with a lower cost as an electrolyte for all solid-state batteries (ASSBs). In this study, ASSBs with LSPS solid electrolyte (SE), lithium-indium alloy anode, and LiCoO2 (LCO) cathode were successfully fabricated and their electrochemical performance at 60 °C was examined. Atomic layer deposition of Li3NbO4 on LCO was conducted to improve the interfacial stability. The Li3NbO4 coating effectively improves the cycle stability of the ASSB. Electrochemical impedance spectroscopy tests indicate a rapid growth of charge transfer resistance upon cycling for the cell with the uncoated LCO, primarily due to the surface instability and build-up of a space charge layer. However, the ASSBs with Li3NbO4 coated LCO show a more stable interface with a negligible impedance increase upon cycling, attributable to the buffering and passivating roles of the Li3NbO4 coating. Lastly, the interfacial microstructure was analyzed to elucidate at the underlying reasons for the impedance increase and the pivotal role of the Li3NbO4 coating.},
doi = {10.1016/J.JPOWSOUR.2018.06.038},
journal = {Journal of Power Sources},
number = ,
volume = 396,
place = {United States},
year = {2018},
month = {6}
}