This paper has described the application of nickel-doped catalytic constituents based on gadolinium-doped ceria (GDC) for fabrication of the solid-oxide fuel cell (SOFC) anode layer integrated with an in-situ methane-reforming layer (MRL). Nanocrystalline powders of Ni1-xCo3xO1+3x/GDC and Ni1-xCuxO/GDC with various compositions (x = 0.3, 0.5, 0.7) were synthesised using an ultrasound-assisted method followed by a thermal treatment to be applied for fabrication of the integrated MRL and the SOFC anode layer, respectively. Thermogravimetric analysis showed that the synthesized powders should be optimally calcined at 700 °C to exhibit improved crystallinity and catalytic activity. The morphological analysis showed the formation of nanocrystalline powders with particle size ranging from 4-86 nm that was confirmed by the crystal size analysis using XRD results. The elemental analysis by EDX indicated a successful distribution of the constituent ceramic and bimetallic phases after the addition of a sonication stage. The results of FT-IR and Raman spectroscopy confirmed lack of solvents residual after calcination that was in agreement with residual moisture content values obtained from TGA data. The fabricated anode-MRL bilayers had an adequate porosity (36.7%) and shrinkage (33.5%) after adding carbon particles as a pore former (at a loading fraction of 5.9 wt.%). The catalytic performance measurements of the MRL showed a methane conversion of 13% at maximum activity with a weight hour space velocity (WHSV) of 60 L/gh that was mainly due to carbon deposition in the reaction condition.

中文翻译：

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纳米晶Ni 1-x Co x O/GDC粉末作为SOFCs甲烷重整催化剂的合成及特性

本文描述了基于钆掺杂氧化铈 (GDC) 的镍掺杂催化成分在制造与原位甲烷重整层 (MRL) 集成的固体氧化物燃料电池 (SOFC) 阳极层中的应用。Ni1-xCo3xO1+3x/GDC 和 Ni1-xCuxO/GDC 的纳米晶粉末具有不同的成分 (x = 0.3, 0.5, 0.7) 使用超声辅助方法合成，然后进行热处理，用于制造集成 MRL和 SOFC 阳极层。热重分析表明，合成的粉末应在 700°C 下进行最佳煅烧，以提高结晶度和催化活性。形态分析表明形成了粒径范围为 4-86 nm 的纳米晶粉末，这通过使用 XRD 结果的晶体尺寸分析得到证实。EDX 的元素分析表明，在添加超声处理阶段后，陶瓷和双金属相的成分成功分布。FT-IR 和拉曼光谱的结果证实煅烧后没有溶剂残留，这与从 TGA 数据获得的残留水分含量值一致。在添加碳颗粒作为成孔剂（负载分数为 5.9%）后，制造的阳极-MRL 双层具有足够的孔隙率（36.7%）和收缩率（33.5%）。