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Updated: Jul 22, 2025

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用于电催化氧降低和硫电池的功能化佐基诺林相关的COF的金属化

Zhuangzhuang Wu¹, Lijuan Feng², Junming Luo¹

¹State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, PR China.

Journal of colloid and interface science

|July 23, 2023

概括

对共价有机框架 (COF) 的合成后修改创造了金属-M@COF复合材料. 这些复合材料具有可调节的氧减少反应 (ORR) 路径,并且在硫电池中提高了性能.

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
纳米技术纳米技术

背景情况:

联有机框架 (COF) 是用于能源应用的多功能材料.
合成后修饰 (PSM) 为增强COF特性提供了一条途径.
开发多功能复合材料是先进能源转换和利用的关键.

研究的目的:

使用PSM合成和描述基于COF的新型复合材料.
研究这些复合材料的氧降解反应 (ORR) 的电催化活性.
为了评估-硫 (Li-S) 电池中硫浸复合材料的性能.

主要方法:

通过脱甲基化合成COF-Ph-OH.
通过N-M-O结构形成制备的M@COF-Ph-OH复合材料.
描述材料和评估ORR电催化和Li-S电池性能.

主要成果:

COF-Ph-OH显示了一个2e-ORR通路,具有高的H2O2选择性.
M@COF-Ph-OH复合材料表现出具有低H2O2选择性的4e-ORR通路,可通过金属d电子结构调节.
在ORR中,Co@COF-Ph-OH在ORR中表现优于Fe和Ni类似物.
在Li-S电池中,S-Co@COF-Ph-OH显示出更高的初始容量,更低的阻抗和更强的循环稳定性.

结论:

引入的金属的d电子结构有效调节了电催化ORR路径.
PSM是创建基于COF的多功能复合材料的可行策略.
开发的复合材料对电化学能量储存和转换应用具有显著的前景.

关键词:

共价有机框架是共价有机框架.硫电池的使用方法多功能复合材料多功能复合材料氧降解反应是氧降解反应.d 电子结构d 电子结构

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