Deciphering Ni Content-Induced Microstructural Evolution in Ni-YSZ Cermets for Direct Ammonia SOFC Performance.

Surprisingly, the ρ TPB values exhibited a decreasing trend with increasing Ni content, with the anode having an NiO/YSZ weight ratio of 50:50, recording the highest ρ TPB value of 0.021 μm/μm 3 .

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The mean Ni particle volume increased progressively with a higher Ni loading in the anode. Beyond the 25th percentile, the Ni particle volumes are consistently larger as the Ni/YSZ ratio increased, highlighting a clear trend of Ni particle agglomeration.

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