复合阳极Ni-Fe/Ce0.9Gd0.1O1.95在阴极支撑单电池的性能及其表征
收稿日期: 2021-03-24
网络出版日期: 2022-03-14
Performance and characterization of Ni-Fe/Ce0.9Gd0.1O1.95 composite anode for cathode-supported single cell
Received date: 2021-03-24
Online published: 2022-03-14
为了提高固体氧化物燃料电池在中温条件下的电性能,探索了一种双金属阳极的阴极支撑单电池。单电池以La0.6Sr0.4CoO3（LSC）-Ce0.9Gd0.1O1.95（GDC）为阴极支撑体,旋涂了甘氨酸-硝酸盐法制备的La0.9Sr0.1Ga0.8Mg0.2O3-δ（LSGM）电解质及Sm0.2Ce0.8O1.9（SDC）缓冲层,涂覆了由硬模板法和浸渍法结合制备的Ni-Fe/GDC双金属阳极。对制备材料进行了XRD和微观形貌分析,单电池电化学测试在800 ℃和750 ℃下,以氢气为燃料的最大功率密度达0.73 W/cm2和0.64 W/cm2,以甲烷为燃料时达0.41 W/cm2和0.40 W/cm2。测试后的SEM表明,阳极具有多孔的微观结构,金属颗粒均匀包覆蠕虫状GDC,保证了单电池具有较高的发电性能。
由宏新 , 王强 , 彭炼 . 复合阳极Ni-Fe/Ce0.9Gd0.1O1.95在阴极支撑单电池的性能及其表征[J]. 无机盐工业, 2022 , 54(1) : 34 -38 . DOI: 10.19964/j.issn.1006-4990.2021-0182
The bimetallic anode for the cathode-supported single cell was explored to improve the electrochemical performance of intermediate temperature solid oxide fuel cell.The single cell was supported by the La0.6Sr0.4CoO3（LSC）-Ce0.9Gd0.1O1.95（GDC）cathode-supported body,which was coated the La0.9Sr0.1Ga0.8Mg0.2O3-δ（LSGM） electrolyte film and the Sm0.2Ce0.8O1.9（SDC） bu-ffer layer by spin-coating,and was tape-coated the Ni-Fe/GDC composite anode.The electrolyte was prepared by glycine-nitrate process,and the anode was prepared by hard template and wet impregnation method.The prepared materials were ana-lyzed by XRD and SEM.The maximum power densities of the cell were 0.73 W/cm2 and 0.64 W/cm2 at 800 ℃ and 750 ℃ in hydrogen,and the values were 0.41 W/cm2 and 0.40 W/cm2 in dry methane,respectively.The conducted SEM showed that the anode had the porous microstructure with high specific surface and bimetallic particles were densely coated on the vermicular GDC,which resulted in the high power generation performance.
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