Exploring Advanced Oxygen Reduction Reaction Electrocatalysts: The Potential of Metal-Free and Non-Pyrolyzed Covalent Organic Frameworks

ChemSusChem. 2024 Apr 17:e202400558. doi: 10.1002/cssc.202400558. Online ahead of print.ABSTRACTOxygen reduction reaction (ORR) electrocatalysis is an area of increasing interest for the in-situ production of H2O2 or the development of energy-related devices such as hydrogen fuel cells. Although pyrolyzed catalysts still offer the best performances to date with reference to the organic-based catalysts, metal-free and non-pyrolyzed covalent organic frameworks (COFs) stands out as promising alternatives candidates due to their favourable characteristics such as crystallinity, porosity, and organic composition, allowing the study of structural-property relationships. Herein, we present the design principles and recent advances in COFs-based ORR electrocatalysts, demonstrating how composition influences the activity and electronic pathway of the oxygen reduction process.PMID:38631681 | DOI:10.1002/cssc.202400558

Source: ChemSusChem - April 17, 2024 Category: Chemistry Authors: Marcos Mart ínez-Fernández Jose L Segura Source Type: research