Copper oxide-nickel oxide periodic heterogeneous hollow structure and preparation method thereof

Abstract

The invention discloses a copper oxide-nickel oxide periodic heterogeneous hollow structure and a preparation method thereof. According to the structure, tubular copper oxide and granular nickel oxide-copper oxide composites are alternately connected to form a nanometer chain. The tube diameter of copper oxide tubes ranges from 50 nm to 60 nm, the length of the copper oxide tubes ranges from 20 nm to 69 nm, the thickness of the walls of the copper oxide tubes ranges from 11 nm to 13 nm, and composite granules are of a hollow structure; or the tube diameter of the copper oxide tubes ranges from 50 nm to 60 nm, the length of the copper oxide tubes ranges from 71 nm to 500 nm, the thickness of the walls of the copper oxide tubes ranges from 11 nm to 13 nm, the composite granules are of a core-shell structure, cores of the composite granules are nickel oxide, and shells of the composite granules are nickel oxide-copper oxide composites. According to the method, after aluminum sheets are sequentially subjected to an anodic oxidation method, an electrochemical deposition method and a chemical corrosion method, a nano-wire array formed by alternately connecting copper pillars and nickel pillars is obtained; the nano-wire array is ultrasonically dispersed and then placed at the temperature of 650-700 DEG C to be annealed, and target products are prepared. The copper oxide-nickel oxide periodic heterogeneous hollow structure has high specific surface area and good surface permeability and can be widely used for multiple fields such as catalysis, gas sensitiveness, lithium ion cells, solar cells and nanoelectronics.

Description

technical field [0001] The invention relates to a heterogeneous hollow structure and a preparation method thereof, in particular to a copper oxide-nickel oxide periodic heterogeneous hollow structure and a preparation method thereof. Background technique [0002] Nanostructured transition metal oxides have attracted widespread attention due to their promising application prospects in many fields such as catalysis, gas sensing, lithium-ion batteries, solar cells, and nanoelectronics. In recent years, transition metal oxides of various shapes such as nanowires, nanosheets, nanospheres, nanotubes, etc. have been successfully prepared, such as the applicant of the Chinese invention patent CN103111615 B announced on September 3, 2014 A nano chain composed of copper oxide film connected with metal nickel particles and a preparation method thereof. The nanochains mentioned in this patent are composed of metal nickel particles and copper oxide films alternately connected; the metho...

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Problems solved by technology

However, there are deficiencies in both the product and its preparation method. First, only copper oxide is a transition metal oxide in the material constituting the product, and it cannot form the respective advantages and interactions of transition metal oxides of different components. The synergistic effect produced; Secondly, copper oxide as a transition metal oxide is only filmy, it is difficult to have high specific surface area, low material density and good surface permeability, and it cannot effectively improve the surface activity and surface reaction of the product. speed, and is conducive to the rapid diffusion of ions, thereby improving its catalytic activity, gas-sensing characteristics, and battery performance including high charge and discharge capacity, good cycle performance and high specific capacity; finally, the preparation method cannot obtain a variety of transition Product of metal oxide, high specific surface area and good surface permeability

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