Heterogeneous Cu1.92S@Cu3P/Ni2P Nanospheres on Nickel Foam for Effective Electrocatalytic Oxygen Evolution Reaction

The design and exploration of highly efficient and economical electrocatalysts for large-scale hydrogen generation from electrochemical water splitting is of great importance towards hydrogen economy. Herein, we have synthesized heterogeneous Cu1.92S@Cu3P/Ni2P nanospheres on nickel foam, which exhibits excellent OER activity in alkaline solution. When used as an anode, the overpotential of Cu1.92S@Cu3P/Ni2P at the current density of 10 mA cm(-2) is only 211 mV, with a good stability (24 h). The heterogeneous Cu1.92S@Cu3P/Ni2P nanospheres has synergistic modulation of electronic structure, abundant active sites and fast electron transfer rate, which contributes to its high OER activity.

Automated summary

In this study, heterogeneous Cu1.92S@Cu3P/Ni2P nanospheres with excellent OER activity in alkaline solution were successfully synthesized for efficient and economical large-scale hydrogen generation from electrochemical water splitting.