A nanocomposite, containing gadolinium-doped ceria (GDC, Ce 0.85 Gd 0.15 O 1.925 ) and 10 mol% gadolinium-doped barium cerate (BGC, BaCe 0.85 Gd 0.15 O 2.925 ), was developed as an electrolyte material for intermediate temperature-solid oxide fuel cell. The composite powder was synthesized through an auto-combustion process that yielded the desired phases right after combustion. The powder was characterized using X-ray diffraction, particle size analysis, Brunauer–Emmett–Teller surface area analysis and transmission electron microscopy. The electrical properties of the composite electrolyte were characterized by electrochemical impedance spectroscopy under air as a function of temperature. The effect of second phase on total conductivity and activation energy of the composite material was compared with that of GDC of similar composition. For this, GDC (Ce 0.85 Gd 0.15 O 1.925 ) powder was produced using a similar processing technique. The microstructural characterization of GDC and GDC–10BGC composite materials was studied through scanning electron microscopy. The electrochemical properties of planar cell, using GDC–10BGC as electrolyte and employing Ni–(GDC–10BGC) and La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3- δ -based anode and cathode materials, were investigated.

中文翻译：

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IT-SOFC用掺钆和铈酸钡复合电解质材料的合成与表征

一种含有钆掺杂的氧化铈 (GDC, Ce 0.85 Gd 0.15 O 1.925 ) 和 10 mol% 钆掺杂的铈酸钡 (BGC, BaCe 0.85 Gd 0.15 O 2.925 ) 的纳米复合材料被开发作为中温氧化物的固体电解质材料燃料电池。复合粉末是通过自动燃烧过程合成的，燃烧后立即产生所需的相。使用 X 射线衍射、粒度分析、Brunauer-Emmett-Teller 表面积分析和透射电子显微镜对粉末进行表征。复合电解质的电性能通过空气下的电化学阻抗谱表征为温度的函数。将第二相对复合材料总电导率和活化能的影响与相似成分的GDC进行比较。为了这，GDC (Ce 0.85 Gd 0.15 O 1.925 ) 粉末使用类似的加工技术生产。通过扫描电子显微镜研究了 GDC 和 GDC-10BGC 复合材料的微观结构特征。研究了使用 GDC-10BGC 作为电解质并采用 Ni-(GDC-10BGC) 和 La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ 基阳极和阴极材料的平面电池的电化学性能。