| 复合阳极共烧制备致密La0.7Ca0.3Cr0.97O3-δ连接体薄膜的研究 |
| Fabrication of Dense La0.7Ca0.3Cr0.97O3-δ Interconnect Thin Membrane on Composite Anode Support by Co-firing |
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| 摘要: 固体氧化物燃料电池(SOFC)陶瓷连接材料的低成本薄膜化制备是现在公认的技术难题。为了改善传统NiO/YSZ阳极与LaCrO3基连接材料的共烧匹配性能，将化学性质稳定的Y0.7Ca0.3Cr0.9Zn0.1O3-δ(YCCZ)连接材料创造性地引入到NiO/YSZ阳极中，制备NiO/YSZ/YCCZ(6∶4∶2，m/m/m)三相复合阳极，并进行烧结特性、微观结构、电导率、热膨胀系数等系列性能的对比测试，结果表明NiO/YSZ/YCCZ新型复合阳极具有优良的综合性能。以NiO/YSZ/YCCZ为支撑体，采用浆料浸渍法制备湿膜，1 400 ℃空气条件下共烧，成功制备致密La0.7Ca0.3Cr0.97O3-δ连接体薄膜。 |
| 关键词: 陶瓷连接材料 薄膜 共烧 SOFC |
| 基金项目: |
| Abstract: Developing cost-effective methods to prepare ceramic interconnect thin membrane for solid oxide fuel cell (SOFC) stacks is currently considered as a major technical obstacle. In order to improve co-firing compatibility of the traditional anode support NiO/YSZ with LaCrO3-based interconnects, chemically stable interconnect material of Y0.7Ca0.3Cr0.9Zn0.1O3-δ (YCCZ) was introduced to NiO/YSZ anode. Triple-phase composite NiO/YSZ/YCCZ with the weight ratio of 6∶4∶2 was prepared, and then examined as novel anode support. Sintering character, microstructure, electrical conductivity, and thermal expansion coefficient of the composite anode were respectively investigated in detail as a function of YCCZ addition. Results indicate the NiO/YSZ/YCCZ anode has excellent overall performance. Furthermore, by using a simple and cost-effective drop-coating/co-firing process, dense La0.7Ca0.3Cr0.97O3-δ interconnect thin membrane was successfully prepared on the novel NiO/YSZ/YCCZ anode support. This work provides a simple technical solution for dense ceramic interconnect fabrication for YSZ-based SOFC stacks. |
| Keywords: ceramic interconnect thin membrane co-firing SOFC |
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| 王松林,凤 仪,王东生,孟广耀.复合阳极共烧制备致密La0.7Ca0.3Cr0.97O3-δ连接体薄膜的研究[J].无机化学学报,2012,28(4):779-784. |
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