Surface/interface engineering and the induced reconstruction of MOFs-based electrocatalysts for alkaline oxygen evolution reaction
摘要
The oxygen evolution reaction (OER) under alkaline conditions is a crucial anodic reaction for the electrolysis of water to produce clean hydrogen. To address the resource scarcity and poor stability of traditional noble metal catalysts (such as RuO2 and IrO2), metal-organic frameworks (MOFs) and their derivatives employ surface engineering and interface engineering to modify the electronic structure of reactive active sites, optimize the d-band center, and adjust the adsorption energy of oxygen-containing intermediates. Research has demonstrated that the true active sites for the OER rely on metal oxides/hydroxides regenerated from metal sites. This review will establish the connection between surface engineering and interface engineering strategies and the induced reconstruction of MOFs-based electrocatalysts. It will also reveal how to effectively achieve the rational design of pre-catalysts through in-situ characterization techniques. Additionally, performance comparisons will be provided to demonstrate the superiority of these strategies. Based on this, the challenges in the rational design of pre-catalysts for MOFs to achieve more efficient OER catalysts in the future will be proposed.