Abstract
Catalyst stability, reaction kinetics and electrocatalytic activity are significant issues in electrocatalysis. In this work, OER is examined by a fluidized working mode using RuO2 nanoparticles (NPs) and Fe-Ni bimetallic MOF NPs as two model catalysts, which represent different particle-electrode interactions (contact/reaction time). Both fluidized RuO2 NPs and MOF NPs display much higher catalyst stability after long-term electrochemical test over their immobilized counterpart. Moreover, a much favored reaction kinetics is for the first time demonstrated for fluidized reactions along with the greatly elevated electroactivity. This work increases the generality of the fluidized electrochemistry to the reaction time scale of hundreds of milliseconds, and expands its advantages in promoting reaction kinetics as well as the electrocatalytic activity.
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