Molybdenum phosphide: a new highly efficient catalyst for the electrochemical hydrogen evolution reaction

Area of Science:

• Materials Science
• Electrochemistry
• Catalysis

Background:

• The hydrogen evolution reaction (HER) is crucial for clean energy technologies.
• Developing efficient, stable, and cost-effective electrocatalysts is essential for HER.
• Molybdenum-based compounds are explored for catalytic applications.

Purpose of the Study:

• To introduce molybdenum phosphide as a novel electrocatalyst for the HER.
• To evaluate the electrocatalytic activity and stability of molybdenum phosphide in acidic media.

Main Methods:

• Electrochemical characterization techniques were employed.
• Hydrogen evolution reaction performance was assessed.
• Stability tests were conducted in acidic electrolyte.

Main Results:

• Molybdenum phosphide demonstrated excellent electrocatalytic activity for HER.
• A small Tafel slope of 60 mV dec(-1) was recorded, indicating efficient kinetics.
• The catalyst exhibited remarkable acid stability.

Conclusions:

• Molybdenum phosphide is a highly promising, earth-abundant electrocatalyst for the HER.
• Its performance rivals that of precious metal catalysts.
• This finding opens new avenues for developing advanced HER electrocatalysts.