[Figure 1] Activation of the Base Surface and Catalytic Reaction Mechanism of Two-Dimensional Metallic WSe₂ Material (IMAGE)
Caption
Two-dimensional metallic WSe₂ exhibits limited catalytic reactivity as its active sites are confined to the edge sites. During charge-discharge cycles, structural degradation and loss of conductivity occur, leading to rapid termination of the material's lifespan. However, introducing atomic-level defect control (platinum substitution and selenium atomic vacancies) activates the basal plane of the 2D two-dimensional metallic WSe₂ material. Subsequently, the high catalytic reactivity of the oxide intermediates formed during the first discharge cycle synergizes with the high electrical conductivity inherent to the metallic material, enabling efficient and stable maintenance of charge-discharge cycles.
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Korea Institute of Science and Technology
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