A NEW EQUIVALENT-CIRCUIT FOR PT/YSZ OF A SOLID OXIDE ELECTROLYTE FUEL-CELL - RELATION BETWEEN THE MODEL PARAMETERS AND THE INTERFACE CHARACTERISTICS

被引：12

作者：

NAKAGAWA, N

KURODA, C

ISHIDA, M

机构：

[1] Research Laboratory of Resources Utilization, Tokyo Institute of Technology, Midoriku, Yokohama

来源：

SOLID STATE IONICS | 1990年 / 40-1卷

关键词：

D O I：

10.1016/0167-2738(90)90369-3

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：

To clarify the effect of morphological characteristics on parameters (Re, C and S) of an equivalent circuit for an air, platinum/ YSZ electrode, the electrodes impedances were measured for the three types of electrodes made of porous platinum, film-platinum, and film-platinum sandwiched between porous substrate and YSZ electrolyte. By comparing the simulation results for the three electrodes, it is found that C is proportional to R-2e and that S is proportional to Re. It suggests that the para meter C is proportional to the contact area of the Pt/YSZ interface and the parameter S is inversely proportional to the length of three-phase bounding. Hence by the values of the parameters Re (or S) and C, we can estimate the morphological characteristics of the interface. © 1990.

引用

页码：411 / 414

页数：4