Preparation of Li7P3S11 glass-ceramic electrolyte by dissolution-evaporation method for all-solid-state lithium ion batteries. (20th November 2016)

• Record Type: Journal Article
• Authors: Xu, R.C.; Xia, X.H.; Yao, Z.J.; Wang, X.L.; Gu, C.D.; Tu, J.P.
• Is Part Of: Electrochimica acta. Volume 219(2016)
• Page Start: 235
• Page End: 240
• Publication Date: 2016-11-20
• Subjects: Li7P3S11 glass-ceramic -- Solid state electrolyte -- Lithium ion battery -- Ion conductivity; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.09.155
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Design/fabrication of solid state electrolytes with high ionic conductivity is of great importance to develop next-generation Li ion batteries. In this work, the Li7 P3 S11 glass-ceramic electrolyte is successfully synthesized by dissolution- evaporation approach. The solvent effect on the electrochemical performance of Li7 P3 S11 is investigated by electrochemical impedance spectroscopy and chronoamperometry tests. The Li7 P3 S11 electrolyte prepared by a solution of acetonitrile has a high ionic conductivity of 9.7 × 10 −4 S cm −1 at 298 K and a low activation energy of 31.2 kJ mol −1 . Impressively, a wide and stable electrochemical window up to 5 V (vs. Li/Li + ) is demonstrated between the solid electrolyte and lithium electrode. The developed dissolution-evaporation approach shows good industrial prospect due to its advantages of energy conservation and high efficiency.