在CuO/Fe2O3中阐明烧结机制和协同兴奋剂效应,用于先进的低温固体氧化物燃料电池 (LT-SOFCs) 的Gd-Doped Ceria电解质
Jia-Hong Li1, Fei-Fei Lu1, Ru-Yi Hou2
1State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiao-Tong University, Xi'an, Shannxi 710049, China.
ACS applied materials & interfaces
|May 8, 2025
概括
用CuO和Fe2O3合加多化 (GDC) 的合剂显著降低了电解质的烧结温度. 这种增强可以提高低温固体氧化物燃料电池 (LT-SOFC) 的电性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 陶工程 陶工程 陶工程
背景情况:
- 加多添加的 (GDC) 是固体氧化物燃料电池 (SOFC) 的关键电解质材料.
- GDC的高烧结温度限制了其应用,增加了制造成本.
- 与其他氧化物合GDC是一种提高其烧结和电气性能的策略.
研究的目的:
- 研究CuO和Fe2O3对GDC烧结行为的协同作用.
- 评估这种兴奋剂对GDC电解质电性能的影响.
- 探索开发低温固体氧化物燃料电池 (LT-SOFC) 的潜力.
主要方法:
- 对CuO和Fe2O3共的GDC进行同热烧结分析.
- 对粘流烧结机制的验证.
- 准现场观测和同热测试,以验证拟议的"宏观密度化温度".
主要成果:
- 一个CuO到FeO1.5的摩尔比为3:1降低了烧结温度到980°C (降低了450°C).
- 最低的烧结激活能量为389kJ/mol,在3:1的兴奋剂比率下实现.
- 在700°C时,离子导电率达到0.041 S/cm (10%高于GDC),在700°C时,阳极支持的电池显示出1.2 W/cm2的功率密度.
结论:
- CuO和Fe2O3的配合有效地促进了GDC的低温烧结.
- 该研究引入了"宏密度化温度"概念,用于密度化过程分析.
- 这种密封的GDC为高效和成本效益的LT-SOFC提供了一个有前途的电解质.
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