A Cu₃P-CoP hybrid nanowire array: a superior electrocatalyst for acidic hydrogen evolution reactions

Area of Science:

• Materials Science
• Electrochemistry
• Catalysis

Background:

• Developing cost-effective electrocatalysts is crucial for efficient hydrogen evolution reaction (HER) in acidic media.
• Hybrid materials offer synergistic effects for enhanced catalytic activity.

Purpose of the Study:

• To design and evaluate a novel hybrid electrocatalyst for the HER.
• To investigate the synergistic effects between Cu3P and CoP in a hybrid nanostructure.

Main Methods:

• Fabrication of Cu3P-CoP hybrid nanowire arrays on carbon cloth (Cu3P-CoP/CC).
• Electrochemical characterization of the catalyst's HER performance in 0.5 M H2SO4.
• Assessment of catalytic activity and long-term durability.

Main Results:

• The Cu3P-CoP/CC catalyst exhibited superior HER performance, requiring an overpotential of 59 mV at 10 mA cm-2.
• This performance was significantly better than individual Cu3P/CC and CoP/CC catalysts.
• The hybrid catalyst demonstrated high electrochemical durability over extended operation.

Conclusions:

• The Cu3P-CoP/CC hybrid nanowire array is a highly effective and durable electrocatalyst for HER in acidic media.
• Synergistic effects between Cu3P and CoP enhance catalytic activity.
• This cost-effective catalyst presents a promising alternative for hydrogen production.