The Hydrothermal Synthesis Method And The Electrochemical Catalytic Performance Research Of NiWP Hybrid Materials

Nickel and its alloys have received extensive attention in the field of electrochemical catalysis due to their characteristics of transition metals.However,the hydrogen evolution reduction and oxygen evolution reaction performance of bulk Ni and its alloys is not ideal,and the reaction mechanism needs to be further explored.In this paper,nickel-tungsten-phosphorus(Ni WP)non-noble metal nanowire electrocatalysts were prepared by anodic aluminum oxide(AAO)template.The relationship between hydrogen evolution reduction and the W contents in the catalysts were studied.And the performance of the catalysts were further improved by loaded grapheme quantum dots revealing the reaction mechanism of water splitting.In this paper,NiWP catalyst was self reducted in the anodic aluminum oxide(AAO)template when the AAO template after sensitization was imerged in the bath using the method of low-temperature water bath with the aim of nickel and tungsten and phosphorus synergistic effect.And we find the best catalyst synthesis method through adjusting the pore size of templates and the ratio of elements;and the performance of the material is improved by the loading of graphene quantum dots.XRD,SEM,TEM and Contact angle measurement were used to analyze the phase structure,surface morphology and chemical composition of NiWP nanowire catalyst and that of loaded grapheme quantum dots.And electrochemical tests were carried out by electrochemical workstation.The aluminum sheet act as the template after sensitized,and NiWP self-supporting oxygen evolution catalyst with nanometer reticular structure was synthesized by template method in the low-temperature water bath.In the low-temperature water bath conditions,by adjusting the Ni / W / P element ratio,we can get a part of the crystalline Ni crystal and amorphous alloy composite catalyst.XRD,TEM,SEM,ICP,AFM were used to analyze the phase structure,surface morphology and chemical composition of the oxygen evolution catalysts with different compositions.And the relationship between the different Ni / W / P ratios and the oxygen evolution reaction performance were investigated.