通过Ce-doping诱导的氧气空缺和稳定的AlO结构协同增强RuO2的稳定性,以促进酸氧演化反应
Zhenwen Yu1, Yong Gao1, Mengyue Liu1
1Centre for Hydrogenergy, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China.
Journal of colloid and interface science
|December 27, 2025
概括
设计的MnCo2O4配合Ce和Al的辅助剂增强了氧化 (RuO2) 催化剂的稳定性和氧化演化反应 (OER) 在酸性介质中的活性,显示出优越的耐用性和低的超电位.
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
- 催化剂是一种催化剂.
背景情况:
- 在酸性介质中开发稳定和活性催化剂用于氧化演化反应 (OER) 对能源应用至关重要.
- 氧化卢 (RuO2) 催化剂看起来很有前途,但其结构不稳定性和耐用性有限.
研究的目的:
- 为RuO2催化剂设计稳定的电子捐赠支持,以提高OER活动和耐用性.
- 为了研究Ce和Al联合兴奋剂对MnCo2O4 (MCO) 旋支的影响.
主要方法:
- 与 (Ce) 和 (Al) 联合化MnCo2O4,以创建一种新的支材料.
- 描述修改后的MCO支持和RuO2催化剂的结构和电子特性.
- 在酸性介质中评估 RuO2/Ce,Al-MCO OER 催化剂的电化学性能.
主要成果:
- Ce 兴奋剂诱导的氧空缺 (Ov) 增强了电子转移和电子相互作用在RuO2/MCO接口.
- 的结合稳定了晶格氧,创造了一个更坚固的接口结构.
- RuO2/Ce0.075Al0.025-MCO催化剂 (Ce:Al比率 3:1) 实现了低超电位 (200mV在10 mA cm-2) 和特殊的稳定性 (400h在80 mA cm-2).
结论:
- 在酸性介质中,Ce和Al联合剂有效地提高了RuO2催化剂的稳定性和OER性能.
- 设计的MCO支持为高性能,酸稳定的RuO2催化剂提供了热力学上有利的框架.
- 这项研究提供了对设计先进的催化剂的见解,用于要求高的电化学应用.
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