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Nb₂AlC MAX纳米板支持Ru纳米晶体作为提高pH-通用生产的有效催化剂

Zhensui Lu¹, Hui Yang¹, Qian Liu²

¹Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), Tianjin Key Laboratory for optoelectronic Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China.

Small (Weinheim an der Bergstrasse, Germany)

|December 21, 2023

概括

这项研究引入了新的2D碳化 (Nb2AlC) 纳米板作为催化剂的支,显著提高了整体水分裂应用的演化反应 (HER) 性能.

科学领域:

材料科学材料科学材料科学
催化剂是一种催化剂.
可再生能源可再生能源是可再生能源.

背景情况:

马克斯相提供了独特的陶和金属特性组合.
两维 (2D) MAX纳米板为改善催化应用提供了丰富的表面活性位点.
开发高效的电催化剂对于整体水分和可再生能源技术至关重要.

研究的目的:

开发新的2D碳化 (Nb2AlC) 纳米片作为 (Ru) 催化剂的支.
研究Ru@Nb2AlC纳米片的催化活性和耐久性,用于进化反应 (HER) 和整体水分裂.
探索MAX支持的金属催化剂在可再生能源应用中的潜力.

主要方法:

2D Nb2AlC纳米片的合成.
在Nb2AlC纳米板上固定Ru纳米晶体.
对于HER和整体水分裂的Ru@Nb2AlC催化剂的电化学表征.
氧化后处理以形成RuO2@Nb2AlC催化剂以提高活性.

主要成果:

优化的Ru@Nb2AlC纳米片表现出与Pt可比的动力学和优越的HER活性,具有较低的超电位 (61mV在10mA cm−2).
催化剂在性介质中表现出 5000 个周期或 80 小时的优异耐用性.
Ru@Nb2AlC催化剂的质量活性大约是商业Pt/C (20%重量) 的4.8倍.
经过氧化后的RuO2@Nb2AlC催化剂促进了HER和氧演化反应 (OER) 活动,在1.61V的水分裂中实现了100%的法拉第效率.

结论:

2D Nb2AlC纳米板作为水分裂中的Ru催化剂的有效支.
Ru@Nb2AlC催化剂为生产的贵金属催化剂提供了一个有希望的替代品.
这项工作为可再生能源部门设计先进的MAX支持金属催化剂提出了一种新的策略.

关键词:

MAX纳米薄膜可以使用.这是一种双功能催化剂.催化活动的催化活动.总体而言,水分化是水分化的.有协同效应的效应.

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