High performance electrodes for medium-temperature solid oxide fuel cells:: Activation of La(Sr)CoO3 cathode with highly dispersed Pt metal electrocatalysts

被引：117

作者：

Uchida, H ^{[1
]}

Arisaka, S ^{[1
]}

Watanabe, M ^{[1
]}

机构：

[1] Yamanashi Univ, Fac Engn, Lab Eletrochem Energy Convers, Kofu, Yamanashi 4008511, Japan

来源：

SOLID STATE IONICS | 2000年 / 135卷 / 1-4期

关键词：

medium-temperature SOFC; cathode; electrocatalyst;

D O I：

10.1016/S0167-2738(00)00465-3

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：

Ln order to apply La(Sr)CoO3 (LSC) as a cathode for medium-temperature solid oxide fuel cells without causing unfavorable solid-state reactions between LSC and yttria-stabilized zirconia electrolyte, the use of samaria-doped ceria (SDC) interlayer was examined. A porous LSC cathode prepared on a thin and dense SDC interlayer exhibited very high performance even at 800 degreesC. The performance was enhanced further by dispersing a small amount of nm-sized Pt catalysts on the LSC surface. The current density on the Pt-LSC cathode at an overpotential of - 0.05 V was 0.6 A/cm(2) at 800 degreesC in O-2. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：347 / 351

页数：5

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