Ferrocene-modified covalent organic framework for efficient oxygen evolution reaction and CO2 electroreduction

Abstract

A ferrocene-modified COF, namely Ni-Tph-COF-Fc, was synthesized and applied in OER. Compared with Ni-Tph-COF-OH, Ni-Tph-COF-Fc shows improved performance with a current density of 99.6 mA cm⁻², an overpotential of 450 mV, and a Tafel slope of 73.1 mV dec⁻¹, which may be attributed to a synergy between introduced ferrocene and metalloporphyrin in the COFs. Moreover, the enhanced OER performance leads to an improved CO₂RR performance with an FE_CO of 93.1%. This work represents an effective strategy to enhance the anodic OER performance and realize efficient CO₂RR.