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精确定义的三元金属化物纳米线与稳定Pt纳米集群,以促进性进化反应

Dayong Ren¹, Daiyan Jiang¹, Yueshuang Huang¹

¹Key Laboratory for New Functional Materials of Ministry of Education, Institution of Advanced Energy Materials and Devices, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China.

Journal of colloid and interface science

|March 28, 2024

概括

--酸纳米线在进化反应中表现出卓越的性能,与纳米薄膜和商业催化剂相比,具有高活性和耐久性.

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:

开发高效且耐用的催化剂用于电化学生产至关重要.
基催化剂是有效的,但往往需要高负载,并面临稳定性问题.

研究的目的:

设计和合成具有增强演化反应 (HER) 活性和耐久性的新集成三元金属化物.
为了研究催化剂支的不同形态 (纳米线与纳米板) 之间的结构-属性关系.

主要方法:

采用水热化电沉积方法,在泡上制备与-化 (NiCoP) 集成的集群.
合成了两个不同的形态: 1D纳米线 (NW) 和 2D纳米板 (NS).
对于HER的电化学性能,使用循环电压测量和时电压测量等技术进行了评估.

主要成果:

与纳米板 (Pt_cluster-NiCoP@NF NSs) 相比,Pt集群装饰的NiCoP纳米线 (Pt_cluster-NiCoP@NF NWs) 显示出优越的HER性能.
Pt_集群-NiCoP@NF NWs在100 mA cm^-2时显示出65 mV的低超电位,以及38.86 mV dec^{-1的Tafel斜率.}
Pt_集群-NiCoP@NF NWs的质量活动 (11.47 A mgPt-1) 超过了商业Pt/C,在高电流密度下5000个周期和30小时的良好稳定性.

结论:

NiCoP支的1D纳米线形态,利用"尖端效应"和高表面积,显著提高了HER动力学和催化剂效率.
开发的Pt_集群-NiCoP@NF NWs代表了电化学生产的有希望的低含量,高活性和持久的催化剂.

关键词:

的演化反应反应.金属支的相互作用.在 Pt 纳米集群中.第三种金属化物.尖端效应就是尖端效应.

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