基于的双金属位点催化剂,用于高效的性演化反应
Jingwei Li1,2, Tiantian Yang1,2, Nana Zhang1,2
1School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China. hui_liu@tju.edu.cn.
Chemical communications (Cambridge, England)
|August 5, 2025
概括
我们开发了一种新型的铜--双金属单原子催化剂 (DMSC),使用液体中的火花剥离. 这种DMSC表现出优异的性进化反应性能,与商业/碳催化剂相匹配.
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:
- 开发用于演化反应 (HER) 的高效电催化剂对于清洁能源技术至关重要.
- 单原子催化剂提供高原子利用效率和独特的催化性能.
- 对于性介质的稳定和高度活性单原子催化剂的合成仍然存在挑战.
研究的目的:
- 为了合成一种新的双金属单原子催化剂 (DMSC),用Cu纳米粒子中分离的Rh和Cr原子.
- 研究孤立的Rh和Cr单个原子对电催化性能的协同效应.
- 评估合成的DMSC的性HER电催化活性.
主要方法:
- 在液体中进行火花除 (SAL) 方法,用于合成CuRh1Cr1 DMSC.
- 电化学表征技术来评估HER的性能.
- 对孤立的Rh和Cr单个原子的协调环境的分析.
主要成果:
- 成功合成了CuRh1Cr1 DMSC与分离的Rh和Cr单个原子分散在Cu纳米粒子中.
- 对孤立的Rh和Cr原子观察到不同的协调环境.
- 证明Rh和Cr单个原子的协同作用驱动了催化过程.
- 达到与商业Pt/C.相比的性HER电催化性能.
结论:
- 该SAL方法是有效的创建DMSCs与孤立的单个原子.
- 孤立的Rh和Cr原子之间的协同相互作用增强了催化活性.
- CuRh1Cr1 DMSC为性HER的Pt基催化剂提供了一个有希望的,具有成本效益的替代方案.
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