Invigorating the catalytic performance of CoP through interfacial engineering by Ni2P precipitation

Ni₂P was precipitated on CoP matrix, meanwhile the interface region between CoP and Ni₂P lower the hydrogen bonding. So the whole CoP/Ni₂P||CoP/Ni₂P cell for electrochemical water splitting only needs 1.60 V to drive at 10 mA cm⁻².