高操作温度的必要性对固体氧化物燃料电池(SOFC)的商业可行性构成相当大的障碍。将活性共掺杂剂离子引入多晶固体结构可以直接影响所得复合材料的物理化学和电性能,包括微晶尺寸,晶格参数,离子和电子电导率,可烧结性,和机械强度。本研究提出了钴-铁取代钆掺杂二氧化铈(CoxFe1-xGDC)作为一种创新,用于开发陶瓷燃料电池的无镍阳极复合材料。一种新的共沉淀技术,使用酒石酸铵作为沉淀剂在Co2的多阳离子溶液中,Gd3+,Fe3+,并利用Ce3+离子。使用一套全面的技术,系统地分析了合成样品的物理化学和形态特征,包括用于热分析的DSC/TGA,XRD用于晶体学分析,SEM/EDX用于形态和元素分析,用于化学键分析的FT-IR,和用于振动分析的拉曼光谱。形态分析,SEM,显示纳米粒子的形成(≤15nm),这与XRD分析确定的晶体尺寸非常吻合,在≤10nm的范围内。单个SOFC双层的制造发生在电解质支撑的结构中,使用GDC作为电解质层和CoO-Fe2O3/GDC复合材料作为阳极。利用SEM成像和EIS分析来检查制造的对称电池。
The necessity for high operational temperatures presents a considerable obstacle to the commercial viability of solid oxide fuel cells (SOFCs). The introduction of active co-dopant ions to polycrystalline solid structures can directly impact the physiochemical and electrical properties of the resulting composites including crystallite size, lattice parameters, ionic and electronic conductivity, sinterability, and mechanical strength. This study proposes cobalt-iron-substituted gadolinium-doped ceria (CoxFe1-xGDC) as an innovative, nickel-free anode composite for developing ceramic fuel cells. A new co-precipitation technique using ammonium tartrate as the precipitant in a multi-cationic solution with Co2+, Gd3+, Fe3+, and Ce3+ ions was utilized. The physicochemical and morphological characteristics of the synthesized samples were systematically analysed using a comprehensive set of techniques, including DSC/TGA for a thermal analysis, XRD for a crystallographic analysis, SEM/EDX for a morphological and elemental analysis, FT-IR for a chemical bonding analysis, and Raman spectroscopy for a vibrational analysis. The morphological analysis, SEM, showed the formation of nanoparticles (≤15 nm), which corresponded well with the crystal size determined by the XRD analysis, which was within the range of ≤10 nm. The fabrication of single SOFC bilayers occurred within an electrolyte-supported structure, with the use of the GDC as the electrolyte layer and the CoO-Fe2O3/GDC composite as the anode. SEM imaging and the EIS analysis were utilized to examine the fabricated symmetrical cells.