Diffusion Impedance on Nickel/Gadolinia-Doped Ceria Anodes for Solid Oxide Fuel Cells

被引：33

作者：

Aravind, P. V. ^{[1
]}

Ouweltjes, J. P. ^{[2
]}

Schoonman, J. ^{[3
]}

机构：

[1] Delft Univ Technol, Sect Energy Technol, NL-2628 CA Delft, Netherlands

[2] Energy Res Ctr Netherlands, NL-1755 LE Petten, Netherlands

[3] Delft Univ Technol, Inorgan Chem Lab, NL-2628 BL Delft, Netherlands

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2009年 / 156卷 / 12期

关键词：

GAS; TEMPERATURE; CONVERSION; GEOMETRY; IMPACT; SOFCS; NI;

D O I：

10.1149/1.3231490

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical impedance measurements were carried out on symmetrical nickel/gadolinia-doped ceria test cells. For H(2), N(2), and H(2)O mixtures, the diffusion length obtained based on the impedance measurements is on the order of centimeters. This high value of the diffusion length is attributed to the flow field in the reactor. It is suggested that a detailed analysis of the gas flow field inside the test reactor is essential before interpreting the impedance measurements with various solid oxide fuel cell test configurations. (C) 2009 The Electrochemical Society. [DOI: 10.1149/1.3231490] All rights reserved.

引用

页码：B1417 / B1422

页数：6

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