Supercritical CO₂-assisted rapid synthesis of covalent organic framework-based electrocatalyst for efficient two-electron oxygen reduction reaction.

ABSTRACT: Covalent organic frameworks (COFs) hold significant promise as electrocatalysts, but their synthesis is typically constrained by prolonged reaction times (>72 h), high temperatures ( >120 °C), and the use of organic solvents. Conventional methods also involve multiple freeze-pump-thaw cycles, complicating scalability. Herein, we report a supercritical carbon dioxide (Sc-CO₂)-assisted strategy for the rapid synthesis of COFs, enabling their direct in-situ growth on carbon substrates. This supercritical-solvothermal approach yields COF@CNT composites that exhibit effective electrocatalytic performance towards the two-electron oxygen reduction reaction (2e^- ORR). The resulting catalysts achieve a H₂O₂ production rate of 94 mol g_cat^-1

SUBMITTER: Song J 

PROVIDER: S-EPMC12508161 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature