High-temperature protonic conduction in LaP3O9

被引：39

作者：

Amezawa, K ^{[1
]}

Kitajima, Y

Tomii, Y

Yamamoto, N

机构：

[1] Kyoto Univ, Grad Sch Human & Environm Studies, Sakyo Ku, Kyoto 6068501, Japan

[2] Kyoto Univ, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan

[3] Kyoto Univ, Grad Sch Sci, Sakyo Ku, Kyoto 6068502, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 12期

关键词：

D O I：

10.1149/1.1819879

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel proton-conducting material based on LaP3O9 was developed and its electrical conduction properties were investigated by measuring conductivities under 0.4-5 kPa of p(H2O) and 0.01-100 kPa of p(O-2) at 573-973 K. LaP3O9 conducted protons dominantly by partial substitution of Sr for La. Conductivities of the 1 mol % Sr-doped LaP3O9 were 7 x 10(-7) to 3 x 10(-4) S cm(-1) at 573-973 K, and were relatively higher than those of other proton-conducting rare earth phosphates such as LaPO4 and La7P3O18. Conductivities of the Sr-doped LaP3O9 were almost independent of p(H2O), suggesting dominant protonic conduction even under low p(H2O) conditions. (C) 2004 The Electrochemical Society.

引用

页码：A511 / A514

页数：4

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