Metal-Free Covalent Organic Frameworks for Electrocatalytic Oxygen Reduction Reaction

被引：11

作者：

Jia, Ji ^{[1
]}

Li, Jiali ^{[1
]}

Ma, Si ^{[1
]}

Zhang, Zhenwei ^{[1
]}

Liu, Xiaoming ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2023年 / 44卷 / 11期

基金：

中国国家自然科学基金;

关键词：

covalent organic frameworks; electrocatalysis; metal-free catalysts; oxygen reduction reaction; pi-conjugated effects; CARBON;

D O I：

10.1002/marc.202200717

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Exploring efficient and low-cost electrocatalysts for the oxygen reduction reaction (ORR) is important for renewable energy conversion. Covalent organic frameworks (COFs) have recently risen as ideal candidates for catalyzing ORR, but this field is still in its infancy. Herein, a new framework material (named as COF-JLU82) containing bifluorenylidene and benzoselenadiazole units with periodic alternating arrangement is designed and synthesized. The metal-free COF-J LU82 exhibits good electrocatalytic activity with a half-wave potential of 0.68 V, Tafel slope of 72.79 mV dec(-1) and the conversion frequency (TOF) of 0.0044 s(-1), which is better than the previously reported COF-JLU23. This study enriches the types of COF-based ORR electrocatalysts and promotes the development of more highly efficient metal-free ORR electrocatalysts.

引用

页数：7

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