基于铁的金属有机框架衍生FeNiP/N-合碳异质核心外结构用于氧气进化
Yijia Cao1, Yunfang Yan1, Yusong Wen1
1College of Chemistry, Nankai University, Tianjin 300071, China.
Inorganic chemistry
|February 9, 2024
概括
开发先进的电催化剂是通过水电解有效生产的关键. 本研究介绍了一种新的-铁化物/化碳纳米 (FeNiP/NC) 催化剂,在没有贵金属的情况下提供高活性和耐用性.
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:
- 没有贵金属的电催化剂对于减少生产水电解的能源消耗至关重要.
- 由于其有序结构,金属有机框架 (MOF) 作为合成过渡金属电催化剂的有效前体.
研究的目的:
- 为氧化演化反应 (OER) 开发一种高活性,耐用和成本效益的电催化剂.
- 探索使用MOFs作为创建新型电催化材料的前体.
主要方法:
- 纳米级Fe-soc-MOFs的合成.
- 在现场通过Ni2+蚀刻转化为-铁双层氧化物/MOF (FeNi LDH/MOF).
- 化和化以获得-铁化物/化碳立方纳米 (FeNiP/NC).
- 密度函数理论 (DFT) 计算以了解催化机制.
主要成果:
- 合成的FeNiP/NC催化剂在10 mA/cm2时显示出240 mV的OER的低超电位.
- 催化剂表现出卓越的耐用性,连续电解45小时.
- DFT计算证实了FeNiP和N-化碳之间的协同效应,增强了催化活性.
结论:
- FeNiP/NC催化剂为高效的气生产提供了一个有希望的,无贵金属的替代品.
- 来自MOF的核心外结构和协同效应有助于催化剂的高性能.
- 在电解过程中在现场转化为MOOH活性位点,增强了长期稳定性.
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