期刊
ELECTROCHIMICA ACTA
卷 219, 期 -, 页码 235-240出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.09.155
关键词
Li7P3S11 glass-ceramic; Solid state electrolyte; Lithium ion battery; Ion conductivity
资金
- program for Innovative Research Team in University of Ministry of Education of China [IRT13037]
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 Li7P3S11 glass-ceramic electrolyte is successfully synthesized by dissolution-evaporation approach. The solvent effect on the electrochemical performance of Li7P3S11 is investigated by electrochemical impedance spectroscopy and chronoamperometry tests. The Li7P3S11 electrolyte prepared by a solution of acetonitrile has a high ionic conductivity of 9.7 x 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. (C) 2016 Elsevier Ltd. All rights reserved.
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