阳极支撑三层一体化结构电池的制备及性能研究

韩敏芳 杨志宾 郑紫微

摘 要：采用流延工艺制备了NiO-8%Y2O3/ZrO2（YSZ）阳极支撑三层一体化结构单电池，在此基础上采用浸渍工艺在多孔YSZ 基体上低温制备了高活性阴极La0.6Sr0.4Co0.2Fe0.8O3–δ（LSCF）。研究发现：降低电极制备温度可以得到微观形貌可控、分布均匀的纳米电极，并且避免了电极与基体间的反应；通过控制浸渍次数，制备了不同LSCF含量的电池；随着浸渍量的增加，电极的极化电阻显著下降；在800 ℃时，LSCF质量分数为45%的电池的功率密度高达1090 mW/cm2，同时电池稳定运行90 h，表现出了很好的稳定性。

关键词：固体氧化物燃料电池 三层一体化 阳极支撑 浸渍工艺

Abstract：Tri-layer composite NiO-8%Y2O3/ZrO2（YSZ） anode supported single cell for solid oxide fuel cell （SOFC） was fabricated via tape-casting， and high performance cathode La0.6Sr0.4Co0.2Fe0.8O3–δ（LSCF） was fabricated at a low temperature via infiltration inporous YSZ. The morphology-controlled and uniformly-distributed nano-electrode was obtained， and the reaction between the elec-trode and substrate was avoided as the cathode fabrication temperature was decreased. The single cells with different contents of LSCF were fabricated via the change of the infiltration time. The polarization resistance of the electrode decreased with increasing the infiltration content. The maximum output power density was 1 090 mW/cm2 at 800 ℃ and the cathode infiltration content of 45%（mass fraction）. In addition， the cell could operate stably for 90 h， showing the excellent stability.

Key Words：Solid oxide fuel cell； tri-layer composite； anode supported； infiltration process

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