The electrochemistry of the OER encompasses several proposed mechanisms, including the adsorbate evolution mechanism (AEM), the lattice oxygen mechanism (LOM), and the oxide path mechanism (OPM) .The AEM is the most widely accepted, involving the formation of various oxygen-containing intermediates on the catalyst surface. The LOM suggests the participation of lattice oxygen atoms in the reaction, while the OPM proposes the formation of higher oxidation state metal-oxo species Interestingly, recent studies have revealed a correlation between pseudocapacitive behavior and OER performance. Materials exhibiting stronger pseudocapacitive characteristics tend to demonstrate enhanced OER efficiency, as both processes involve a series of adsorption steps .This finding provides a new perspective on catalyst design and evaluation. Basically, understanding the electrochemistry of OER is crucial for developing efficient and cost-effective catalysts. The intricate reaction mechanisms, comprising numerous intermediates and potential pathways, underscore the necessity for sophisticated characterization techniques and theoretical modeling to elucidate structure-activity relationships . Future research endeavors should prioritize the integration of these insights to engineer catalysts with optimized electronic structures, morphologies, and compositions, thereby circumventing the kinetic limitations of OER.