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Al,Bi元素对合成LSCF的影响 被引量：1

Effects of Al, Bi additives on LSCF synthesis
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摘要 将La(NO3)3、Sr(NO3)2、Fe(NO3)3和Co(NO3)2按照La0.8Sr0.2Co0.8Fe0.8O3(LSCF)摩尔比配置硝酸盐混合溶液,并在其中添加Al、Bi硝酸盐,用差示扫描量热法(DSC)、热重-差热分析法(TG-DTA)和X射线衍射光谱法(XRD)结合研究Al,Bi两种元素的添加对在锶掺杂的锰酸镧-氧化钇稳定的氧化锆(LSM-YSZ)阴极现场低温合成LSCF的影响。DSC、TG-DTA的研究结果表明,Al、Bi两种元素的加入,改变了LSCF前驱物的熔融状态和均匀性。XRD的研究结果表明,未添加和添加Al的样品,需要在800℃以上出现明显的LSCF钙钛矿结构特征峰,添加Bi的LSCF样品在650℃有明显的LSCF特征峰,Bi对LSCF钙钛矿结构形成有促进作用。添加Bi的LSCF样品有La稳定的Bi2O3和Sr稳定的Bi2O3峰。 Nitrate mixed solution was synthesized according to La（NO3）3、Sr（NO3）2、Fe（NO3）3 mole percentage of La （NO3）3, Sr（NO3）2, Fe（NO3）3 and Co（NO3）2, and Al, Bi were added into it. The effects of Al, Bi additives on low temperature synthesized LSCF were analyzed by DSC, TG-DTA and XRD. The results of DSC and TG-DTA show that the added Al, Bi change melting state and uniformity of LSCF precursor. XRD analysis results show that samples of LSCF and LSCF（Al） appear LSCF perovskite structure characteristic peaks at above 800℃, sample with Bi additive appear clear LSCF perovskite peaks at 650℃, and Lao0.176Bi0.8344O1.5 and Bi0.81Sr0.19O1.4 peaks appear in LSCF （Bi） sample.
作者 张全生 武田保雄
机构地区 三重大学工学部分子素材工学科
出处 《电源技术》 CAS CSCD 北大核心 2006年第12期973-976,共4页 Chinese Journal of Power Sources
关键词 LSCF 低温合成 添加剂 LSCF low temperature synthesis additives
分类号 TM911.4 [电气工程—电力电子与电力传动]
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参考文献8

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同被引文献11

  • 1YAMAHARA K,JACOBSON C P,VISCO S J,et al.Thin film SOFCs with cobalt-infiltrated cathodes[J].Solid State Ionics,2005,176:275-279.
  • 2LU C,SHOLKLAPPER T Z,JACOBSON C P,et al.LSM-YSZ cathodes with reaction-infiltrated nanoparticles[J].Journal of the Electrochemical Society,2006,153(6):A 1115-A 1 119.
  • 3HUANG Y,AHN K,VOHS J M,et al.Characterization of Sr-doped LaCoO3-YSZ composites prepared by impregnation methods[J].Journal of the Electrochemical Society,2004,151(10):A 1 592-A 1 597.
  • 4HUANG Y,VOHS J M,GORTE R J.Characterization of LSM-YSZ composites prepared by impregnation methods[J].Journal of the Electrochemical Society,2005,152(7):A 1 347-A 1 353.
  • 5HUANG Y,VOHS J M,GORTE R J.SOFC cathodes prepared by infiltration with various LSM precursors[J].Electrochemical and Solid.State Letters,2006,9(5):A 237-A 240.
  • 6JIANG S P.A review of wet impregnation-An alternative method for the fabrication of high performance and nano-strctured electrodes of solid oxide fuel cells[J].Materials Science and Engineering,2006.A 418:199-210.
  • 7VIRKAR A V,CHEN J,TANNER C W,et al.The role ofelectrode microstructure on activation and concentration polarizations in solid oxide fuelc ells[J].Solid State Ionics,2000,131:189-198.
  • 8SHOLKLAPPER T Z,LU C,JACOBSON C P,et al.LSM-infiltrated solid oxide fuel cell cathodes[J].Electrochemical and Solid-State Letters,2006,9(8):A 376-A 378.
  • 9JIANG S P,WANG W,Fabrication and performance of GDCimpregnated(La,Sr)MnO3 cathodes for intermediate temperature solid oixde fuel cells[J].Journal of the Electrochemical Society,2005.152(7):A 1 398-A 1 408.
  • 10JIANG S P,CHEN X J,CHAN S H,et al.GDC-impregnated (La0.75Sr0.25)(Cr0.5Mn0.5)O3anodes for direct utilization of methane in solid oxide fuel cell[J].Journal of the Electrochemical Society,2006,1 53(5):A 850-A 856.

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电源技术
2006年 第12期

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