Ruthenium ditelluride nanotube, preparation method and application thereof

The invention discloses a ruthenium ditelluride nanotube as well as a preparation method and application thereof. The ruthenium ditelluride nanotube is prepared by a self-template method. The preparation method comprises the following steps: firstly, preparing a tellurium nanotube; then, the surface of the tellurium nanotube is coated with ruthenium ion doped polydopamine through a polymerization reaction, and a ruthenium ion doped polydopamine coated tellurium nanotube is obtained; and finally, calcining at high temperature to obtain the ruthenium ditelluride nanotube. The ruthenium ditelluride nanotube is in nanotube morphology, has large specific surface area and porosity, can expose more catalytic active sites, is beneficial to electrolyte diffusion and gas release in an electro-catalysis process, can be used as a catalyst in water electrolysis hydrogen production, can effectively reduce water electrolysis reaction overpotential, improves hydrogen evolution current density, and improves hydrogen evolution