通过单原子促进器进行表面调节的白金电催化剂,用于持久的非水性氧化
Kuiquan Yan1,2, Yang Hong1,2, Zhi Wang1,2
1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625, Renmin Street, Chaoyang District, Changchun, 130022, P.R. China.
Angewandte Chemie (International ed. in English)
|January 22, 2026
概括
在Pt位点用Ni对单个原子进行合,可增强有机电解质中的氧化反应 (HOR). 这种新型催化剂 (PtNi1/Ni) 显示出高效率和稳定性,克服了电化学氨合成的挑战.
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:
- 氧化反应 (HOR) 对于可再生能源的转化至关重要.
- 非水性电解质的挑战包括缓慢的动力学和催化剂中毒.
- HOR对于电化学氨基合成与介导的降低相结合至关重要.
研究的目的:
- 为有机电解质中HOR开发一种高效且耐用的电催化剂.
- 为了研究单原子化催化剂的抗中毒机制.
- 评估催化剂在中介电化学氨合成中的性能.
主要方法:
- 在Ni基底 (PtNi1/Ni) 上合成Ni单个原子介导的Pt位点.
- 在四基 (THF) 电解质中进行电催化试验.
- 理论计算 (例如,DFT) 和光谱表征 (例如,XAS,XPS).
主要成果:
- 在THF中,PtNi1/Ni实现了近100%的法拉代效率 (FE) 和>1000小时的稳定性.
- 商业Pt电极显示稳定性<0.2小时.
- 单个Ni原子修改了Pt电子结构,减少了反应障碍,抑制了毒害物种.
结论:
- 单原子兴奋剂是一种有效的策略,用于创建活跃和持久的非水性HOR电催化剂.
- 由于协同作用,PtNi1/Ni 具有出色的抗中毒特性.
- 催化剂对电化学氨基合成具有很高的氨 FE 约62%,具有很大的前景.
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