在异质接口的Ru/RuO2上促进性进化反应,通过Pt单个原子的兴奋剂
Yiming Zhu1, Malte Klingenhof2, Chenlong Gao1
1Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, 201804, Shanghai, China.
一个新的单原子催化剂 (Pt-Ru/RuO2) 为性演化反应 (HER) 提供了具有成本效益的替代方案. 这种先进的催化剂表现出高活性和稳定性,为高效的生产铺平了道路.
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
- 催化剂是一种催化剂.
背景情况:
- 为性演化反应 (HER) 开发具有成本效益的电催化剂至关重要.
- 基于的催化剂是有效的,但昂贵,需要替代品.
研究的目的:
- 探索性HER的活性和成本有效的电催化剂.
- 作为一种潜在的替代方案,研究单个原子 (SAs) 被入异构接口的Ru/RuO2支 (Pt-Ru/RuO2) 中.
主要方法:
- 在Ru/RuO2支上合成Pt-Ru/RuO2催化剂与单个原子.
- 在 1 M KOH 中进行电化学表征,以评估 HER 的性能.
- 物理化学表征和理论计算,以了解催化机制.
主要成果:
- Pt-Ru/RuO2在1M KOH中表现出较低的HER过电位和出色的稳定性.
- 与商业Pt/C和Ru/C相比,催化剂显示了显著增强的基于成本的活动.
- RuO2加速水分离,而Pt SAs和金属Ru则促进H*的结合.
- 在1.90V时达到1A cm-2,在离子交换膜水电解仪中性能优于Pt/C.
结论:
- Pt-Ru/RuO2是一种非常有前途的基于贵金属的催化剂,用于高效且低成本的生产.
- 催化剂设计为开发高性能电催化剂提供了一个可行的策略.
- 这项工作为通过性HER生产H2的实际生产提供了指导.
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