Dynamic Surface Reconstruction Governs Hydrogen Evolution Activity of Mo2C Electrocatalysts in Alkaline Media

Key Points

• The study aims to understand how surface oxidized species affect the hydrogen evolution activity of Mo2C electrocatalysts.
• Comparison of various Mo2C samples with differing surface conditions
• Electrochemical tests to assess hydrogen evolution activity
• Analysis of surface composition and oxidation states
• Surface oxidized species significantly modify the electrocatalytic activity
• Optimal surface conditions lead to higher efficiency in hydrogen evolution
• Detailed characterization identifies key surface features related to performance