Electronic conductivity measurements of 5 mol% TiO2-doped YSZ by a dc-polarization technique

被引：44

作者：

Kobayashi, K

Kai, Y

Yamaguchi, S

Fukatsu, N

Kawashima, T

Iguchi, Y

机构：

[1] NAGOYA INST TECHNOL,DEPT MAT SCI & ENGN,SHOWA KU,NAGOYA,AICHI 466,JAPAN

[2] TOKYO GAS CO LTD,FUNDAMENTAL TECHNOL RES LAB,MINATO KU,TOKYO 105,JAPAN

来源：

SOLID STATE IONICS | 1997年 / 93卷 / 3-4期

关键词：

YSZ; titania doped zirconia; mixed conductor; electronic conductivity; hole conductivity; oxide ion conductivity; dc-polarization;

D O I：

10.1016/S0167-2738(96)00534-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The partial conductivities of electrons and holes in yttria stabilized zirconia doped with 5 mol% of TiO2 (5TD-YSZ) have been measured by the d.c.-polarization method using Hebb-Wagner's asymmetric cell. The partial conductivities of holes, sigma(p), and electrons, sigma(n), were found to be proportional to p(O2)(1/4) and p(O2)(-1/4), respectively, except for sigma(n) in the low p(O2) regime. The sigma(n) values in 5TD-YSZ were greater than those in non-doped ones reported by several investigators. In contrast, the sigma(p) values in 5TD-YSZ were almost the same with those in the non-doped ones. The activation energy for sigma(n) at the fixed p(O2) of 1.0 atm in 5TD-YSZ was smaller than that of the non-doped one, while that for sigma(p) in 5TD-YSZ was almost the same.

引用

页码：193 / 199

页数：7

共 15 条

[1] ELECTROCHEMICAL STUDIES ON PARTIAL CONDUCTIVITY, MOBILITY AND CONCENTRATION OF ELECTRONS AND DEFECT ELECTRONS IN DOPED ZIRCONIUM DIOXIDE AND THORIUM DIOXIDE [J].