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Abstract Fe‐based metal‐organic frameworks (MOFs) have been reported as potential catalysts for electrocatalytic oxygen evolution reaction (OER). However, it is still a great challenge to rationally design robust MOF catalysts with reasonable ligands due to the lack of research on tunable structure architecture. Herein, a series of Fe‐based MOFs with tunable ligands have been designed and synthesized for OER for the first time. The functionalized Fe‐MOFs‐NHCHO and Fe‐MOFs‐NO 2 derived catalysts show higher OER activity than the pristine Fe‐MOFs. Remarkably, the best‐performing Fe‐MOFs‐NHCHO shows an ultra‐low overpotential of 246 mV at a current density of 10 mA cm −2 , which is 37 mV lower than Fe‐MOFs. This research provides a new design concept based on MOFs materials, in the hope of finding excellent OER catalysts.
Qi et al. (Fri,) studied this question.