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通过电合成金属有机框架将二氧化碳量化减少为液体燃料

Xinchen Kang¹, Bin Wang¹, Kui Hu¹

¹Department of Chemistry, The University of Manchester, Manchester M13 9PL, United Kingdom.

Journal of the American Chemical Society

|September 30, 2020

概括

这项研究引入了一种新的金属有机框架 (MOF) 电极,用于高效的二氧化碳 (CO2) 电减. 基于MOF的新催化剂显著提高了导电性和稳定性,在将CO2转化为酸方面实现了高效率.

科学领域:

材料科学
电化学
催化剂

背景情况:

有效的二氧化碳 (CO2) 电降低对于可持续的能源解决方案至关重要.
热合成的金属有机框架 (MOF) 催化剂的电极接触较差,限制了它们的性能.
开发稳定和导电催化剂对于有效的二氧化碳转化至关重要.

研究的目的:

开发一种改进的基于MOF的电极,用于增强二氧化碳的电降低.
研究一种新的MOF电极接口的电化学活性和稳定性.
为了实现高法拉第效率和减少二氧化碳产品的电流密度.

主要方法:

直接在电极上进行MFM-300的电合成.
在有机电解质中减少二氧化碳的MFM-300(In) -e/In电极的电化学评估
与传统的MOF/碳纸电极进行导电性和性能比较.

主要成果:

与MFM-300 ((In) /碳纸相比,MFM-300 ((In) /碳纸电导率增加了十倍.
在 -2.15 V 的电流密度为 46.1 mA cm−2,相对于 CO2 的电气减排的 Ag/Ag+.
在酸形成方面达到99.1%的杰出法拉第效率.

结论:

简单的电合成提供了一个高效的途径来制造高导电性MOF基电极.
MFM-300(In) -e/In电极具有出色的电化学稳定性和减少二氧化碳的性能.
这项工作为开发用于二氧化碳的先进电催化剂提供了有希望的策略.

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