尼-化Pr0.5Ba0.5CoO3+δ矿具有较低的极化阻力和热膨胀性作为固体氧化物燃料电池的阴极材料
Runze Sun1, Songbo Li1, Lele Gao2
1School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China.
Molecules (Basel, Switzerland)
|April 26, 2025
概括
化Pr0.5Ba0.5Co1-XNiXO3+δ通过提高阴极活性和稳定性来提高固氧化物燃料电池 (SOFC) 的性能. 这种正极材料在SOFC中显示出对高效的能量转换有很大的希望.
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
- 能源转换 能源转换
背景情况:
- 固体氧化物燃料电池 (SOFC) 是一种先进的能量转换装置.
- 优化阴极材料对于增强SOFCs氧降解反应 (ORR) 活性和稳定性至关重要.
研究的目的:
- 为了合成和描述SOFC阴极的Pr0.5Ba0.5Co1-XNiXO3+δ矿材料.
- 为了研究Ni兴奋剂对阴极材料微观结构,电化学性能和热性质的影响.
主要方法:
- 对于Pr0.5Ba0.5Co1-XNiXO3+δ的索尔凝合成方法.
- 电化学阻抗光谱 (EIS) 用于极化电阻测量.
- 电子磁共振 (EPR) 用于氧空位度分析.
- 热膨胀系数 (TEC) 的测量.
主要成果:
- Pr0.5Ba0.5Co0.9Ni0.1O3+δ阴极在800°C时表现出0.041 Ω·cm2的低极化电阻,比未使用过的材料低0.118 Ω·cm2.
- 尼兴奋剂增加了氧空位度,并降低了热膨胀系数,改善了阴极-电解质兼容性.
- 单个电池功率密度增加了69mW·cm-2与Ni-doped阴极.
结论:
- Pr0.5Ba0.5Co1-XNiXO3+δ表现出极好的催化活性和稳定性,用于氧降解反应.
- 尼兴奋剂通过优化阴极特性,有效地提高了SOFC的性能.
- 这种材料是高性能固体氧化物燃料电池的有希望的候选材料.
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