Cu₃P-Ni₂P Hybrid Hexagonal Nanosheet Arrays for Efficient Hydrogen Evolution Reaction in Alkaline Solution

Area of Science:

• Materials Science
• Electrochemistry
• Renewable Energy

Background:

• The global energy crisis necessitates sustainable fuel production methods.
• Efficient electrocatalysts are crucial for hydrogen evolution reaction (HER) via water splitting.
• Developing low-cost, high-performance HER electrocatalysts remains a significant challenge.

Purpose of the Study:

• To synthesize and characterize a novel 3D hybrid Cu3P-Ni2P hexagonal nanosheet array electrocatalyst on nickel foam (Cu3P-Ni2P/NF).
• To evaluate the electrocatalytic performance of the developed material for the hydrogen evolution reaction in an alkaline medium.
• To investigate the synergistic effects between Cu3P and Ni2P for enhanced catalytic activity and durability.

Main Methods:

• Preparation of 3D hybrid Cu3P-Ni2P hexagonal nanosheet arrays on nickel foam.
• Electrochemical characterization, including overpotential measurements at a current density of 10 mA cm-2.
• Assessment of electrochemical durability for long-term hydrogen evolution reaction.

Main Results:

• The Cu3P-Ni2P/NF electrode demonstrated a low overpotential of 103 mV at 10 mA cm-2.
• This performance was significantly better than individual Ni2P/NF (150 mV) and Cu3P/NF (203 mV) electrodes.
• The material exhibited excellent long-term electrochemical stability in an alkaline environment.

Conclusions:

• The synergistic effect between Cu3P and Ni2P in the 3D hybrid structure enhances electrocatalytic activity for HER.
• Cu3P-Ni2P/NF is a highly promising and durable cathode material for efficient electrochemical water splitting and sustainable hydrogen production.