Heterojunction materials are promising candidates for oxygen evolution reaction (OER) electrocatalysts to break the linear scaling relationship and lower the reaction barrier. However, the application of heterojunction materials is always hindered by the complicated multistep synthetic procedures which bring cost, complexity, and reproducibility issues. Herein, a strategy of kinetic controlled synthesis is developed to achieve the one-pot formation of bimetallic metal-organic framework (MOF)/layered double hydroxide (LDH) heterojunction electrodes as highly efficient OER electrocatalysts. The heterojunction electrodes present hierarchical structures with highly porous NiFe-LDH nanosheet networks vertically grown on the surface of NiFe-MOF-74 microprisms, promoting fast mass transport and high exposure of active sites. The strong interactions at the MOF/LDH heterojunction interfaces contribute to the outstanding OER activity surpassing the state-of-art RuO 2 OER catalysts. The MOF/LDH heterojunction electrode exhibits an ultralow overpotential of only 159.7 mV to reach the current density of 10 mA cm −2 , and yields large current densities at small overpotential (100 mA cm −2 at 230.2 mV and 1000 mA cm −2 at 284.3 mV) with long-term durability. This study presents an innovative approach to construct heterojunction materials with simple onestep synthesis, offering a promising pathway for high-efficiency electrocatalyst development.
Improving the efficiency of anodic oxygen evolution (OER) is important to solve the global energy crisis and greenhouse problems. In this paper, a preparation method of MIL-53(Fe)@ZIF-67(Co) composite electrode is...
The NiFe nanoarrays MIL-53(Fe–Ni)/NF-2200Gs was synthesized using a one-pot approach under external magnetic field, and investigated as an efficient OER catalyst in alkaline medium.
Design and synthesis of non-noble metal based electrocatalysts effective overall water splitting in alkaline solution for development of hydrogen energy. One-step hydrothermal synthesis similar to the microflower structure electrocatalysts. The...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.