在现场诱导的Ce3+重建LaFe0.7Ni0.3O3-δ成IT-SOFCs的三相纳米复合材料阴极
Songsong Xu1, Duoyu Zhou1, Rui Zhang1
1State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China. lili1972@xju.edu.cn.
概括
新的纳米复合材料,La1-xCexFe0.7Ni0.3O3-δ,对燃料电池来说是非常有希望的. 优化的材料提供了低电阻和高功率密度,显示出出色的长期稳定性.
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
- 纳米技术纳米技术
背景情况:
- 矿氧化物对于电化学应用至关重要.
- 开发稳定高效的材料是能源技术的关键.
- 基于兰铁酸盐的矿具有可调节的特性.
研究的目的:
- 通过现场自建合成新型三相纳米复合材料.
- 调查兴奋剂对矿性能的影响.
- 为了评估La1-xCexFe0.7Ni0.3O3-δ纳米复合材料的电化学特性.
主要方法:
- 在现场自建三相纳米复合材料.
- 在LaFe0.7Ni0.3O3-δ中的La位点进行 (Ce3+) 兴奋剂.
- 材料结构和电化学性能的表征.
主要成果:
- 成功合成了La1-xCexFe0.7Ni0.3O3-δ (LCFNx) 纳米复合材料,其中包含矿主相和NiO/CeO2二次相.
- 优化的LCFN0.2显示了0.022 Ω cm2的低区域特异性电阻 (ASR).
- 在800°C达到2.36W cm-2的峰值功率密度,在700°C达到200小时的稳定性.
结论:
- Ce3+兴奋剂有效地创造了具有增强电化学性能的三相纳米复合材料.
- 优化的LCFN0.2材料显示出作为高性能能源设备的电极材料的巨大潜力.
- 在现场自建方法为开发基于矿的先进纳米复合材料提供了可行的途径.
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