Hydrogen solubility in Pr-doped and un-doped YSZ for a one chamber fuel cell

被引：22

作者：

Bay, L ^{[1
]}

Horita, T

Sakai, N

Ishikawa, M

Yamaji, K

Yokokawa, H

机构：

[1] Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark

[2] Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 305, Japan

来源：

SOLID STATE IONICS | 1998年 / 113卷

关键词：

one chamber fuel cell; proton conductor; Pr-doped YSZ; YSZ; hydrogen solubility; SIMS;

D O I：

10.1016/S0167-2738(98)00301-4

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：

Yttria-stabilised zirconia electrolytes (YSZ and Pr-doped YSZ) and yttria-doped strontium cerate (SYC) were tested in a one chamber fuel cell fed with a mixture of methane and air at 1223 K. The obtained performances were 4 mW cm(-2), 3 mW cm(-2), 2.5 mW cm(-2), and 0.15 mW cm(-2) for SYC, 1.8 mol.% Pr-doped YSZ, 17 mol.% Pr-doped YSZ, and un-doped YSZ, respectively. These values are lower than those reported by Asano ct al., due to poisoning of the gold electrode. The solubility of hydrogen in the electrolytes was compared by means of tracer exchange using a H-2 + D2O mixture and subsequent SIMS analysis. Doping of Pr in the YSZ resulted in a higher intensity of the D ion, which indicated that hydrogen solubility was raised by the doping. The solubility of hydrogen in the electrolyte may affect the performance of one chamber fuel cells. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：363 / 367

页数：5