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乙烯链接共价有机框架的超分子工程 - - 氧化物混合物用于高活性质子交换膜水电解

Kexin Wang^1,2, Shunqi Xu^2,3, Dashuai Wang⁴

¹Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310 027, China.

Advanced materials (Deerfield Beach, Fla.)

|February 4, 2025

概括

研究人员使用共价有机框架 (COF) 开发了先进的催化剂,以提高质子交换膜水电解 (PEMWE) 的效率. 这项创新显著增强了氧气演化反应 (OER) 以实现更清洁的生产.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
催化剂是一种催化剂.

背景情况:

在催化剂-水接口上改善质子转移对于高效的质子交换膜水电解 (PEMWE) 至关重要.
为酸氧演化反应 (OER) 开发先进的阳极催化剂是提高PEMWE性能的关键.

研究的目的:

合成与二氧化混合的新型共价有机框架 (COF),用于高性能酸性OER催化剂.
研究由COFs促进的催化剂-水界面上的质子转移和脱质子化机制.
为了评估PEMWE设备中开发的催化剂的性能.

主要方法:

合成具有高质子导电性的烯结合共价有机框架 (COF).
混合化COF与二氧化,以创建阳极催化剂.
在现场进行光谱测量和理论计算,以研究接口机制.
将催化剂集成到质子交换膜水电解 (PEMWE) 装置中进行性能测试.

主要成果:

在酸氧演化反应 (OER) 中,COF-二氧化催化剂表现出高性能.
现场研究表明,COF通过通过键定向接口水分子来促进质子转移和脱质.
开发的PEMWE设备在1.54V时实现了1.0A cm-2的记录电流密度.
观察到异常的长期稳定性,超过180小时在200mA cm-2.2.

结论:

使用COF的定向键附加层的自组装是一种强大的策略,可以提高PEMWE的效率.
联有机框架为设计具有可调节结构的先进催化剂提供了一个有前途的平台,用于电化学应用.
这项工作突出了COF在推进质子交换膜水电解技术方面的潜力.

关键词:

面向的联网是指面向的联网.质子交换膜水电解水的电解.二氧化二氧化与二氧化二氧化之间的关系氧介质的稳定过渡状态.与乙烯结合的共价有机框架

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