Influence of electrode configuration on the performance of electrode-supported solid oxide fuel cells

被引：16

作者：

Chung, BW ^{[1
]}

Pham, AQ ^{[1
]}

Haslam, JJ ^{[1
]}

Glass, RS ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94551 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2002年 / 149卷 / 03期

关键词：

Electrode microstructure - Geometric area - Power density;

D O I：

10.1149/1.1448817

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of the cathode-to-anode area ratio on the normalized power density for solid oxide fuel cells was investigated. A geometrically symmetric cell having a screen printed cathode produced a power density of 0.45 W/cm(2) at 800degreesC. However, using a cathode with a geometric area significantly less than that of the anode can enhance the normalized power density by a factor of two. Furthermore, using a current collector with a geometric area less than that of the cathode contributes an additional enhancement that leads to an apparent power density of 1.2 W/cm(2). This difference in cell performance is interpreted as an artifact of normalization. When the performance of the cathode is improved using optimized processing technology and careful control of electrode microstructure, the effect of the area ratio on the normalized power density enhancement is less pronounced. Only testing in a symmetric cell configuration can result in power densities that are also achievable in stacks. (C) 2002 The Electrochemical Society.

引用

页码：A325 / A330

页数：6

共 13 条

[1]

ARAI H, 1991, P 2 INT S SOL OX FUE, P167

[2] Thin-film solid oxide fuel cell with high performance at low-temperature [J].

deSouza, S ;

Visco, SJ ;

DeJonghe, LC .

SOLID STATE IONICS, 1997, 98 (1-2) :57-61

[3]

Ghosh D, 1999, ELEC SOC S, V99, P822

[4]

HASLAM JJ, 2001, UNPUB

[5] Polarization effects in intermediate temperature, anode-supported solid oxide fuel cells [J].

Kim, JW ;

Virkar, AV ;

Fung, KZ ;

Mehta, K ;

Singhal, SC .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (01) :69-78

[6]

Kim JW, 1999, ELEC SOC S, V99, P830

[7]

Minh N, 1999, ELEC SOC S, V99, P68

[8]

MINH N, 1996, P 1996 FUEL CELL SEM, P40

[9]

Ouweltjes JP, 1999, ELEC SOC S, V99, P803

[10]

PHAM AQ, 1999, ELECTROCHEMICAL SOC, V9919, P172

← 1 2 →