Metal‐organic frameworks (MOFs) have attracted significant interest as advanced electrocatalysts owing to their highly porous architectures and varied topological configurations. However, monometallic MOFs often suffer from insufficient active sites and a lack of electronic and synergistic effects, which limit their catalytic performance. In this study, a set of Co x NiFe‐MOF ( x = 0.2, 0.4, 0.6, and 0.8 mmol) catalysts was prepared through a straightforward hydrothermal route, with NiFe‐MOF employed as the precursor. Through systematic optimization of the Co content, the Co 0.6 NiFe‐MOF ( x = 0.6 mmol) demonstrated optimal electrocatalytic activity for the oxygen evolution reaction (OER), attaining an overpotential as low as 316 mV under a current density of 10 mA cm −2 . This work offers a practical approach to implement trimetallic MOFs as catalysts for the OER.
Ma et al. (2026) studied this question.