Ru-based Single-atom and Cluster Catalysts for Alkaline Hydrogen Evolution Reaction
In recent years,single-atom catalysts(SAC)have been widely studied because of their high atomic utilization and low metal loading.However,due to the high surface free energy of SAC,the atoms are in an unstable state and are easily to agglomerate during synthesis or catalysis process.The activity of ruthenium(Ru)SACs for alkaline hydrogen evolution reaction(HER)is not very high.Combining single atom and clusters with different active sites can break through the bottleneck of single atom catalysis in reaction intermediates to some extent.The synergistic competition effect between SAC and cluster catalyst can significantly improve catalyst performance.Herein,the research of ruthenium single atom and cluster catalysts on alkaline HER is reviewed,and the mechanism of alkaline HER is briefly described.Finally,the challenges faced by alkaline HER Ru-based catalysts are presented.
alkaline hydrogen evolution reactionRu-based electrocatalystssingle-atom and clusters
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