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调微观水方向在单原子催化剂用于商业规模的CO2电解到CO

Qi-Rui Wen¹, Shu-Wen Wu², Peng-Xia Lei¹

¹Shenzhen Key Laboratory of Energy Electrocatalytic Materials, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China.

Angewandte Chemie (International ed. in English)

|October 6, 2025

概括

用氧化集群修改-催化剂可提高工业规模一氧化碳 (CO) 生产的电化学二氧化碳减排 (ECR). 这一突破改善了可持续燃料生产的质子供应和催化剂性能.

科学领域:

电化学电化学电化学
催化剂是一种催化剂.
材料科学材料科学材料科学

背景情况:

电化学二氧化碳 (ECR) 减少为一氧化碳 (CO) 是一种可持续能源技术.
在高电流密度下,有限的质子供应阻碍了ECR性能.
单原子催化剂提供了选择性,但与二氧化碳激活和水解离作斗争.

研究的目的:

通过操纵界面水方向来提高二氧化碳减排性能.
研究氧化 (CeO2) 集群对Ni-N4催化剂的影响.
通过改进的ECR,实现工业规模的CO生产.

主要方法:

用CeO2集群对Ni-N4催化剂进行修改.
在流动电池和膜电极组件中进行电化学性能测试.
对水界面方向和反应机制的实验和计算分析.

主要成果:

经过CeO2修改的Ni-N4催化剂实现了近100%的CO法拉代克效率,从50到600mA cm−2.2.
在流量电池中,高效率 (96%) 在800 mA cm−2 保持.
超过96%的法拉代效率在膜电极组件中的50-400 mA cm-2中持续了118小时.

结论:

CeO2的修改改变了水界面的方向,促进了降低的配置.
这种转变降低了水解离的能量障碍,并加速了质子化.
界面水方向操纵是推进二氧化碳电解中的单原子催化剂的关键策略.

关键词:

二氧化碳的电还原 CO2 的电还原.用气降低水的水分.是一个单个原子的原子.质子供应提供质子供应.

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Catalysis

Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.