Ni-YSZ-supported tubular solid oxide fuel cells with GDC interlayer between YSZ electrolyte and LSCF cathode

被引：55
|
作者：
Park, Seung-Young [1 ]
Ahn, Jee Hyun [1 ]
Jeong, Chang-Woo [1 ]
Na, Chan Woong [1 ]
Song, Rak-Hyun [2 ]
Lee, Jong-Heun [1 ]
机构：
[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea
[2] Korea Inst Energy Res, Fuel Cell Res Ctr, Taejon 305343, South Korea
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 24期
基金：
新加坡国家研究基金会;
关键词：
Gadolinia doped ceria; GDC interlayer; Carbonate coprecipitation; Tubular solid oxide fuel cell; Yttria stabilized zirconia; La0.6Sr0.4Co0.2Fe0.8O3-delta; DOPED CERIA INTERLAYER; STABILIZED ZIRCONIA ELECTROLYTE; REACTIVE CE0.8RE0.2O1.9 RE; PEROVSKITE-TYPE OXIDES; INTERMEDIATE-TEMPERATURE; CARBONATE COPRECIPITATION; YB POWDERS; PERFORMANCE; LA; CONDUCTIVITY;
D O I：
10.1016/j.ijhydene.2014.06.103
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：
Highly sinterable gadolinia doped ceria (GDC) powders are prepared by carbonate coprecipitation and applied to the GDC interlayer in Ni-YSZ (yttria stabilized zirconia)-supported tubular solid oxide fuel cell in order to prevent the reaction between YSZ electrolyte and LSCF (La0.6Sr0.4Co0.2Fe0.8O3-delta) cathode materials. The formation of highly resistive phase at the YSZ/LSCF interface was effectively blocked by the low-temperature densification of GDC interlayer using carbonate-derived active GDC powders and the suppression of Sr diffusion toward YSZ electrolyte via GDC interlayer by tuning the heat-treatment temperature for cathode fabrication. The power density of the cell with the configuration of Ni-YSZ/YSZ/GDC/LSCF-GDC/LSCF was as high as 906 mW cm(-2), which was 2.0 times higher than that (455 mW cm(-2)) of the cell with the configuration of Ni-YSZ/ YSZ/LSM(La0.8Sr0.2MnO3-delta)-YSZ/LSM at 750 degrees C. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：12894 / 12903
页数：10
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