一种有效的高温水分离在基于氧离子的固体氧化物电解电池上的活性催化剂
Yuhe Liao1, Feng Zhu1, Xirui Zhang1
1School of Environment and Energy, South China University of Technology, Guangzhou, Guangdong, 510006, China.
Small (Weinheim an der Bergstrasse, Germany)
|September 27, 2025
概括
这项研究通过开发一种新的Pr0.975Sm0.025O2-δ (PSO) 纳米粒子催化剂来增强使用固体氧化物电解电池 (SOEC) 的生产. 经过修改的电极显示出更好的活性和耐用性,以提高水分的效率.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
背景情况:
- 高温固体氧化物电解电池 (SOEC) 是有效的生产.
- 目前的SOEC面临着燃料电极催化活性和稳定性的挑战.
- 氧离子导电解质是SOEC效率的关键.
研究的目的:
- 为了提高Ni-YSZ燃料电极的催化活性和耐用性,用于SOEC中的水分解.
- 为了研究Pr0.975Sm0.025O2-δ (PSO) 纳米粒子表面催化剂的影响.
- 提高国有经济体的气生产效率和稳定性.
主要方法:
- 用PSO纳米粒子修改的Ni-YSZ燃料电极的制造.
- 电化学表征包括燃料电池模式性能和水分测试.
- 使用X射线光电子光谱 (XPS) 和电化学阻抗光谱 (EIS) 与放松时间分布 (DRT) 的材料分析.
主要成果:
- 经过PSO修改的Ni-YSZ电极显示了显著增强的催化活性和耐用性.
- 在燃料电池模式下达到1.27W cm-2的峰值功率密度.
- 在 -0.5 A cm-2下,在 700 °C 和 50% H2O.下,在 200 多小时内表现出极好的稳定性.
- 实现了3.48mLmin-1cm-2的气生产率,在700°C时几乎100%的法拉第效率.
结论:
- 在PSO中的Pr3+/Pr4+氧化还原对和氧空缺有助于提高催化性能.
- 开发的PSO修改的Ni-YSZ电极为通过SOEC实现高效和稳定的气生产提供了有前途的解决方案.
- 这一进步解决了SOEC技术在可再生气发电方面的关键挑战.
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