Synthesis of LaCoO3 nano-powders by aqueous gel-casting for intermediate temperature solid oxide fuel cells

被引：38

作者：

Cheng, Chia Siang ^{[1
]}

Zhang, Lan ^{[1
]}

Zhang, Yu Jun ^{[2
]}

Jiang, San Ping ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

[2] Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Struct & Hered, Minist Educ, Jinan 250061, Peoples R China

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 7-8期

关键词：

solid oxide fuel cell; LaCoO3; nano-powder; gel-casting; wet impregnation; nano-structured electrode;

D O I：

10.1016/j.ssi.2008.01.080

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：

LaCoO3 (LC) perovskite powders for intermediate temperature solid oxide fuel cells (IT-SOFCs) are synthesized by a simple and cost-effective aqueous gel-casting technique using metal nitrates as raw materials. Effect of the ratio of organic precursors (acrylamide (AM) monomer and N, N'-Methylenebisacrylamide (MBAM) crosslinker) to metal nitrates (lanthanum nitrate, cobalt nitrate) and the ratio of AM to MBAM on the particle size are investigated in detail. TEM results indicate that the particle size of LC nano-powders is in the range of 31-60 nm and decreases with increasing ratio of organic precursor to metal nitrates but is not affected by the ratio of AM to MBAM. Preliminary results show that the nano-structured electrode approach based on wet impregnation is effective to combine the high electrocatalytic activity of LC nano-powders and the structural stability of La0.72Sr0.18MnO3-delta (LSM) electrodes for the development of IT-SOFC cathodes. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：282 / 289

页数：8

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