Nickel sulfate,ammonium dihydrogen phosphate,sodium citrate and sodium tungstate were used to prepare the Ni-W phosphide electrodeposition on the substrate supported by nickel foam.The structural morphology of the catalyst and the distribution of elements on the surface of the sample were tested by SEM and EDS,and the parameters of oxygen evolution,hydrogen evolution and catalytic activity of the catalyst were tested by electrochemistry.The results show that the potential of Ni-W phosphide is 231 mV at the current density of 100 mA/cm2,which is 12％higher than that of Ni phosphide.The catalytic area(Cdl)of Ni-W phosphide is 35.72 mF/cm2,which is nearly 1.3 times higher than the active area of Ni phosphide.
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