Performance of La1-xSrxCr1-yMnyO3-δ anode materials for intermediate temperature solid oxide fuel cell

摘要：

La1-xSrxCr1-yMnyO3-δ(LSCM) anode materials were synthesized by glycine nitrate process(GNP).Thermo-gravimetric analysis(TGA) and differential scanning calorimetric(DSC) methods were adopted to investigate the reaction process of LSCM anode materials.The oxides prepared were characterized via X-ray diffraction(XRD),scanning electron microscope and energy dispersive spectroscopy(SEM-EDS),direct current four-electrode and temperature process reduction(TPR) techniques.XRD patterns indicate that perovskite phase created after the precursor was sintered at 1 000 for 5 ℃ h,and single perovskite-type oxides formed after the precursor were sintered at 1 200 for 5 ℃ h.The powders are micrometer size after sintering at 1 000 and 1 ℃ 200 ,℃ respectively.The conductivities of LSCM samples increase linearly with increasing the temperature from 250 to 850 ℃ ℃ in air and the maximum value is 32 S/cm for La0.7Sr0.3Cr0.5Mn0.5O3-δ.But it is lower about two orders of magnitude in pure hydrogen or methane than that of the same sample in the air.TPR result indicates that LSCM offers excellently catalytic performance.

关键词： La1-xSrxCr1-yMnyO3-δ anode materials glycine nitrate process intermediate temperature solid oxide fuel cells properties

作者: CHEN Xiu-hua MA Wen-hui YANG Bin DAI Yong-nian

作者单位: Faculty of Physical Science and Technology,Yunnan University,Kunming 650091,China Faculty of Materials and Metallurgical Engineering,Kunming University of Science and Technology,Kunm

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）