A unique sandwich structure of a CoMnP/Ni2P/NiFe electrocatalyst for highly efficient overall water splitting

A unique sandwich structure of CoMnP/Ni₂P/NiFe is successfully achieved by introducing a Ni₂P interlayer between CoMnP nanosheets and NiFe foam to achieve an excellent bifunctional electrocatalyst, yielding a low cell voltage of only 1.48 V at 10 mA cm⁻² for overall water splitting in alkaline media.