| 摘要： |
A new composite solid electrolyte was synthesized by a mixture of Li2S, P2S5, SnS and LiCl sintered at temperatures of 550-700 degrees C, whose ionic conductivity and microstructures were studied respectively. XRD results show that the main phases of the resulting electrolyte were Li7PS6 and LiCl, and the variation of the LiCl content and the sintering temperature led to a small change of phase composition. A suitable addition of LiCl could enhance the ionic conductivity. In addition, SEM images indicated that the grain size increased with the sintering temperature increase, resulting in that the resistance first decreased and then increased. The composite electrolyte with 14 wt% LiCl sintered at 600 degrees C had the best ionic conductivity of 5.89 x 10(-4) S cm(-1) and the most chemical stability synchronously. (C) 2017 Elsevier B.V. All rights reserved. |
