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有缺陷的碳催化剂与图形N-修饰的相邻五角形作为海水中增强氧降解反应的活性场所

Lei Wang¹, Xuan Liu¹, Mengting Huang¹

¹College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.

ACS applied materials & interfaces

|April 24, 2025

概括

带有合活性位点的新型碳纳米薄膜可以促进海水中的氧降解反应 (ORR). 这种催化剂设计克服了离子中毒,增强了使用海水电解质的能量储存和转换装置.

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:

海水电催化对于能量储存和转换至关重要.
阴极活性位点上的离子吸附阻碍了氧降解反应 (ORR) 的活性和海水中的稳定性.

研究的目的:

在恶劣的海水环境中开发新的电催化剂,以实现高效的ORR.
设计可减轻离子中毒的催化剂,以提高性能.

主要方法:

通过金属介导的部分N去除策略,在碳纳米板 (GAP/CN) 中合成图形N调节的相邻五角形缺陷.
在各种电解质中对催化剂性能和机制的实验和理论研究.

主要成果:

对于ORR,GAP/CN表现出相邻五角形和石墨N之间的有利合作效应.
邻近的五角形作为活性点,而石墨N调节和削弱有害的离子结合.
在0.1M KOH,性人造海水和天然海水中实现了优异的ORR活性,与商业Pt/C相比.

结论:

开发的GAP/CN催化剂显示出高ORR活性和在海水中的稳定性.
这项研究为基于海水的能源设备中的ORR电催化剂提供了一个合理的设计策略.

关键词:

邻近的五角形有缺陷.有缺陷的碳有缺陷的碳石墨酸是石墨酸中的一种.海水的氧降解反应反应有协同效应的效应.

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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.