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多活性站点装载NiCu-MOF@MWCNTs作为电化学水分裂反应的双功能电催化剂

Pavithra Suresh¹, Abirami Natarajan¹, Arulmozhi Rajaram¹

¹Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India.

Langmuir : the ACS journal of surfaces and colloids

|April 22, 2024

概括

这项研究开发了一种新的电催化剂,使用-铜金属-有机框架 (NiCu-MOF) 固定在多壁碳纳米管 (MWCNTs) 上. NiCu-MOF@MWCNTs复合物对和氧演变反应表现出色,推动了绿色能源技术的发展.

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
可再生能源可再生能源是可再生能源.

背景情况:

电催化剂对于将水转化为和氧来产生能源至关重要.
开发高性能催化剂对于推进以水为基础的绿色能源技术至关重要.
现有的催化剂通常面临效率和稳定性的局限性.

研究的目的:

通过在-铜金属-有机框架 (NiCu-MOF) 的纳米块上固定多壁碳纳米管 (MWCNTs) 来构建一种新的电催化剂.
评估合成的NiCu-MOF@MWCNTs复合物的电催化性能,用于演化反应 (HER) 和氧演化反应 (OER).

主要方法:

使用一种简单的溶热方法合成了NiCu-MOF@MWCNTs纳米复合材料.
在性介质 (1.0 M KOH) 中测试了电催化活性.
通过在电流密度为10 mA cm-2时测量HER和OER的超潜能,并评估24小时内的稳定性来评估性能.

主要成果:

NiCu-MOF@MWCNTs复合物在HER和OER方面表现出了卓越的电催化性能.
记录了低超电位:OER为220mV,HER为78mV在10mA cm-2.2时.
催化剂表现出了显著的稳定性,在1.0M KOH下维持其活动24小时.

结论:

MWCNTs和NiCu-MOF纳米块之间的协同相互作用显著增强了电催化活性.
开发的NiCu-MOF@MWCNTs复合物超过了之前报告的许多电催化剂的性能.
这项工作为开发高效和稳定的电催化剂提供了有希望的途径,用于水分和绿色能源生产.

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