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Microstructure Modification of NiO/YSZ Anode in Solid Oxide Fuel Cell by Particle Size Gradation of YSZ

机译:YSZ粒度级粒度粒径梯度氧化物燃料电池中NiO / YSZ阳极的微观结构改性

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The idealized microstructure of NiO/YSZ anode of solid oxide fuel cell (SOFC) is that YSZ structures the bone of the anode and NiO is segregated by YSZ to keep Ni from congregation. To obtain this microstructure, the mixture of coarse YSZ and fine YSZ was used. The effect of the particle size gradation of YSZ on the microstracture of anode was studied. The results show that the homogenous microstructure can be obtained when the mass ratio of the coarse YSZ (d_(50) = 3.38 ìm) to the fine YSZ (d_(50) = 0.4ìm) is 7:3. The pre-sintering temperature has obvious effect on the porosity of the NiO/YSZ. The bending strength of NiO/YSZ and Ni/YSZ are 123MPa and 85MPa, respectively. The reduction of NiO to Ni has less effect on the bending strength for 40vol%Ni/YSZ (7/3).
机译:NiO / YSZ阳极的实际氧化物燃料电池(SOFC)的理想组织是YSZ结构的阳极和NIO的骨头由YSZ进行分离,以使NI免于聚集。为了获得这种微观结构,使用粗YSZ和细YSZ的混合物。研究了YSZ粒度灰度梯度对阳极微动画的影响。结果表明,当粗YSZ(D_(50)=3.38μm)到细YSZ(D_(50)=0.4μm)的质量比为7:3时,可以获得均匀的微观结构。预烧结温度对NIO / YSZ的孔隙率具有明显的影响。 NiO / YSZ和Ni / YSZ的弯曲强度分别为123MPa和85MPa。对NiO至Ni的降低对40Vol%Ni / YSZ(7/3)的弯曲强度的影响较小。

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