Preparation and Electrocatalytic Application of Single-atomic and Nanoparticle Catalysts
Two different types of catalyst materials were prepared by a simple ball-milled calcination method,which were Fe-single-atom-nanoparticle mixed electrocatalyst(Fe1-FeNPs)and Ru-Fe bimetallic electrocatalyst(Ru-Fe DMCs).These two low-cost and easily prepared catalysts,especially the iron single atom nano particle mixed catalysts(Fe1-FeNPs),exhibit excellent OER performance in alkaline solutions,with low overpotentials of 275 mV and 403 mV at current densities of 10 and 50 mA·cm-2.After 12 hours of stability experiments.Their OER catalytic performance remains unchanged and shows good application prospects.The study focused on analyzing the structure,elemental valence states,and composition of iron single atom nano particle mixed catalysts(Fe1-FeNPs).It can be concluded that iron single atom nano particle mixed catalysts(Fe1-FeNPs)are a mixed catalyst that coexists with iron single atoms and iron nanoparticles in the form of porous carbon nanosheets and can significantly improve the performance and stability of electrochemical OER reactions.
ball milling calcination methodsingle-atomic and nanoparticle catalystssynergistic mechanismapplication of electrocatalysis
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