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IT-SOFC復(fù)合陽極材料CDC-LSCMCo的制備及性能
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國家自然科學(xué)基金項目(50204007)；云南省中青年學(xué)術(shù)帶頭人后備人才項目(2005PY01- 33)；教育部新世紀(jì)優(yōu)秀人才支持計劃(NCET-07-0387)


Preparation and Properties of CDC-LSCMCo Composite Anodes for IT-SOFC
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    摘要:

    采用甘氨酸-硝酸鹽法(GNP法)一次性合成固體氧化物燃料電池復(fù)合陽極材料Ce0.8Ca0.2O2-La0.7Sr0.3Cr0.5Mn0.5-xCoxO3-δ (CDC-LSCMCo)。XRD、SEM和EDS分析結(jié)果表明：1350 ℃下燒結(jié)5 h能夠得到單一螢石-鈣鈦礦結(jié)構(gòu)且粒度較小(1 μm左右)的復(fù)合陽極粉體。電導(dǎo)率的測試研究發(fā)現(xiàn)，溫度大于750 ℃時，電導(dǎo)率隨Co含量的增加而增大。800 ℃時，CDC-LSCMCo0.15分別在空氣與氫氣氣氛下的電導(dǎo)率分別為10.5和0.7 S·cm-1。SEM和XRD分析表明：CDC-LSCMCo與La0.9Sr0.1Ga0.8Mg0.2O3-δ電解質(zhì)材料有很好的熱與化學(xué)相容性，是一種應(yīng)用前景良好的IT-SOFC陽極材料。

    Abstract:

    IT-SOFC composite anode material Ce0.8Ca0.2O2-La0.7Sr0.3Cr0.5Mn0.5-xCoxO3-δ (CDC-LSCMCo) was synthesized in one-step by glycine nitrate process (GNP). The results from X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) indicate that the composite anode powder with single fluorite-perovskite phase and small grain size (about 1 μm) was obtained after sintering the predecessor at 1350 oC for 5 h. Conductivity testing show that the conductivity of CDC-LSCMCo increases with the Co content increasing when the temperature is above 750 oC; while at 800 oC the conductivity is 10.5 S·cm-1 and 0.7 S·cm-1 in air and H2 atmosphere, respectively. Good chemical-thermal compatibility between CDC-LSCMCo and La0.9Sr0.1Ga0.8Mg0.2O3-δ (LSGM) was confirmed via XRD and SEM. CDC-LSCMCo is a promising anode material of SOFC for its excellent properties at intermediate temperature.

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張徐民,陳秀華,項金鐘,馬文會,于 潔. IT-SOFC復(fù)合陽極材料CDC-LSCMCo的制備及性能[J].稀有金屬材料與工程,2010,39(1):177~181.[Zhang Xumin, Chen Xiuhua, Xiang Jinzhong, Ma Wenhui, Yu Jie. Preparation and Properties of CDC-LSCMCo Composite Anodes for IT-SOFC[J]. Rare Metal Materials and Engineering,2010,39(1):177~181.]
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  • 收稿日期:2009-01-15
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