Regulating the electronic structure of metal–organic frameworks via ion-exchanged Ir dispersion for robust overall water splitting

Abstract

A facile ion exchange strategy to fabricate CoIr_x–BDC with atomically dispersed Ir is developed towards overall water splitting. The optimized CoIr₃–BDC requires only 12 and 81 mV to deliver 10 and 100 mA cm⁻² alkaline HER, respectively, and only 245 mV to reach 100 mA cm⁻² alkaline OER.