Porous rare earth-transition metal bimetallic oxide nanoparticles oxygen electrocatalyst for rechargeable Zinc-air battery

Abstract

BackgroundThe design and preparation of efficient nonprecious metal catalysts for the ORR, it is still a big challenge in alkaline media. Therefore, there is a need to develop an efficient electrocatalyst to meet the current problems such as energy scarcity in society MethodsIn this experiment, a series of bimetallic oxide nanoparticle catalysts (SmFeOx@CN) with fairly good morphology, which combine the advantages of rare earths and transition metal oxides, were successfully prepared by using silica dioxide as an encapsulated template and later removed. Significant findingsThe bimetallic oxide nanoparticle catalyst produces redox activity that is comparable to that of commercial platinum-carbon catalysts and shows excellent stability, power and energy densities. This excellent performance is owed to the concerted effect of bimetallic oxide nanoparticles and the special electronic layer structure of rare earths.