Selective activation of MoS₂ grain boundaries for enhanced electrochemical activity

Abstract

Molybdenum disulfide (MoS2) has emerged as a promising material for catalysis and sustainable energy conversion. However, the inertness of its basal plane to electrochemical reactions poses challenges to the utilization...

Enhancing the Electrochemical Activity of 2D Materials Edges through Oriented Electric Fields

“…To permit comparison, the reaction current at a given potential was normalized by the basal plane area, as detailed in the Supporting Information. As predicted, the MoS 2 flake exhibited the poorest HER performance in agreement with the EIS results, confirming the limited catalytic activity of the MoS 2 basal plane . The formation of edges enhances the HER performance, as expected.…”

“…As predicted, the MoS 2 flake exhibited the poorest HER performance in agreement with the EIS results, confirming the limited catalytic activity of the MoS 2 basal plane. 34 The formation of edges enhances the HER performance, as expected. The importance of the use of the OEFs is demonstrated by the significant increase in exchange current density in the HER polarogram ( Figure 5 a).…”

“…Unfortunately, the described approaches are only able to enhance the reactivity of a 2D material’s basal plane and not its edge. Therefore, the observed enhancements have been limited by the low initial electrocatalytic activity of the basal plane compared to 2D materials edges …”

“…Therefore, the observed enhancements have been limited by the low initial electrocatalytic activity of the basal plane compared to 2D materials edges. 20 …”