Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 128, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2021.107058
Keywords
Solid state battery; Air stability; Sulfide solid electrolyte
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Funding
- GIC (Global Innovation Contest) fund of LG Energy Solution, Ltd
- Harvard Climate Change Solutions Fund
- Harvard Data Science Initiative Competitive Research Fund
- Dean's competitive fund for promising scholarship at Harvard University
- Real Colegio Complutense (RCC) at Harvard
- National Science Foundation
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The study reports on the air stability and ionic conductivity of a new family of sulfide solid state electrolytes, demonstrating their stability in high humidity environments and potential application in lithium metal anode solid-state batteries.
The air stability of a new family of sulfide solid state electrolytes of Li9.54Si1.74(P1-xSbx)1.44S11.7Cl0.3 (LS(Sb)PS) is reported. The Sb doping further improves the ionic conductivity and cycling stability of the Li9.54Si1.74P1.44S11.7Cl0.3 (LSPS). The air stability of LS(Sb)PS is tested by both material characterization and electrochemical techniques. The structure and electrochemical property of LS(Sb)PS are maintained after 1-hour air exposure in an extreme humidity environment. The lithium metal anode solid-state battery with LiNi0.83Mn0.06Co0.11O2(NMC811) as the cathode and LS(Sb)PS as the electrolyte delivers a high specific capacity and shows a high capacity-retention after cycling.
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