化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (3) : 183-186.

科学研究

双钙钛矿结构固体氧化物燃料电池阴极SmBaFe_2-xCo_xO_5+δ的制备与性能研究

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Synthesis and characterization of double perovskite cathode material SmBaFe_2-xCo_xO_5+δ for solid oxide fuel cells

Guo Ruihua^1,2, Guo Lele¹, Zhang Jieyu², Zhou Guozhi², An Shengli¹

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Received		Published
2016-09-29		2018-03-20
Issue Date	Revised Date
2018-04-09	2016-09-29

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摘要

采用溶胶-凝胶法制得双钙钛矿钐钡铁钴氧化物[SmBaFe_2-xCo_xO_5+δ(x=0,0.5,1.0,1.5)]系列阴极材料,并对制得的SmBaFe_2-xCo_xO_5+δ进行了测试。研究结果表明:制得的SmBaFeCoO_5+δ形成了单一的钙钛矿结构,颗粒较小,分散较均匀,颗粒之间连接性好并拥有适当的孔隙率,与电解质结合较致密,在Co掺杂量x=1.0,850℃条件下,制得的SmBaFeCoO_5+δ的极化界面电阻(Rp)最小为0.763,电导率最大达到58.68S/cm,在固体氧化物燃料电池(SOFC)领域具有较好的应用前景。

Abstract

The double perovskite samarium,barium,iron,cobalt oxide [SmBaFe_2-xCo_xO_5+δ(x=0,0.5,1.0,1.5)]cathode material was prepared by the sol-gel method and tested.The results showed that the obtained SmBaFeCoO_5+δ formed a single perovskite structure with smaller particles,more uniform dispersion,good inter-particle connectivity,proper porosity and it combined with the electrolyte closely.when the test temperature of 850℃ and the Co content of x=1.0,the interface polarization resistance(Rp) of SmBaFeCoO_5+δ was the minimum value of 0.763,the conductivity of SmBaFeCoO_5+δ reached the maximum value of 58.68S/cm,which showed that the application prospects was better in the field of solid oxide fuel cells (SOFCs).

关键词

SOFC / 双钙钛矿结构 / 阴极材料 / SmBaFe_2-xCo_xO_5+δ

Key words

SOFC / double perovskite structure / cathode material / SmBaFe_2-xCo_xO_5+δ

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双钙钛矿结构固体氧化物燃料电池阴极SmBaFe_2-xCo_xO_5+δ的制备与性能研究[J]. 化工新型材料, 2018, 46(3): 183-186 DOI:

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