Formation and characterization of a new (LixAg1-x)2SO4 (x≤0.5) phase

被引：6

作者：

Tao, SW ^{[1
]}

Liu, XQ ^{[1
]}

Peng, DK ^{[1
]}

Meng, GY ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

MATERIALS LETTERS | 1998年 / 34卷 / 1-2期

关键词：

(LixAg1-x)(2)SO4; orthorhombic structure; phase transition; conductivity; ionic conductor;

D O I：

10.1016/S0167-577X(97)00130-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new solid solution (LixAg1-x)(2)SO4 (x less than or equal to 0.50) phase with orthorhombic structure, similar to beta-Ag2SO4, is found when calcining a mixture of Li2SO4 and Ag2SO4 above 550 degrees C and cooling to room temperature. A thermal analysis revealed that the high temperature stable bcc (LixAg1-x)(2)SO4 phase underwent two exothermic effects corresponding to the phase diagram on cooling, and a sharp exotherm at 340.2 degrees C responsible for the formation of the orthorhombic phase. Long time heating treatment showed that it is a metastable phase. Measurement indicated that the conductivity of the sample with 30 mol% Li2SO4 was higher than that of the 50 mol% Li2SO4 sample. The results are discussed in terms of the Li+ ion distribution in both interstitial and lattice sites. (C) 1998 Elsevier Science B.V.

引用

页码：30 / 35

页数：6

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