THE ELECTRICAL-PROPERTIES OF CERAMIC ELECTROLYTES FOR LIMXTI2-X(PO4)3+YLI2O, M = GE, SN, HF, AND ZR SYSTEMS

被引：146

作者：

AONO, H

SUGIMOTO, E

SADAOKA, Y

IMANAKA, N

ADACHI, G

机构：

[1] EHIME UNIV,FAC ENGN,DEPT APPL CHEM,MATSUYAMA,EHIME 790,JAPAN

[2] OSAKA UNIV,FAC ENGN,DEPT APPL CHEM,SUITA,OSAKA 565,JAPAN

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1993年 / 140卷 / 07期

关键词：

D O I：

10.1149/1.2220723

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrical properties of systems of LiMxTi2-x(PO4)3+yLi2O, M = Ge, Sn, Hf, and Zr, were examined in detail. The conductivity and the sinterability increased with the amount of excess lithium oxide in the phosphate. The secondary Li2O phase acts as a flux to accelerate the sintering process and to obtain high conductivity grain boundaries. The conductivity decreased and the activation energy of the bulk component for Li+ migration increased by the partial substitution of Ti4+ for M4+ in systems of LiMxTi2-x(PO4)3+0.2Li2O, M = Ge, Sn, Hf, and Zr. A minimum activation energy of 0.28-0.30 eV, was obtained for the sample with ca. 1310 angstrom3 in the cell volume. LiTi2(PO4)3 has the most suitable tunnel size for a Li+ migration through the NASICON-type network structure.

引用

页码：1827 / 1833

页数：7

共 21 条

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