Method for preparing carbon nano-tube loading ruthenium oxide hydration composite material

Abstract

The invention provides a method of preparing a carbon nano pipe load hydrous ruthenium oxide composite material. First, an electric deposition solution is prepared, and then the carbon nano pipes arespread in the main solution; the ruthenium hydroxide is deposited and loaded on the carbon nano pipes through the electric deposition method, to form the precursor of the carbon nano pipe load hydrousruthenium oxide composite material; the carbon nano pipes / ruthenium hydroxide settling after the electric deposition are put into a drying box to receive heat treatment, and after natural cooling, the carbon nano pipe load hydrous ruthenium oxide nano powder composite material is obtained. The invention has simple preparing conditions, easy to realize, does not include the complicated technologyof re-oxidation treatment after traditional deposition of ruthenium trichloride and alkalinesubstance, so as to prevent introduction of impurity ion, make sure of high purity of products, prevent deficiencies of low output and difficulty in realizng industrialization, can prepare a large amount of carbon nano pipe / hydrous ruthenium oxide compound powder, and helps in industrial large-scale production.

Description

(1) Technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to a method for preparing a carbon nanotube-supported hydrated ruthenium oxide composite material. (2) Background technology [0002] The excellent electrochemical properties of ruthenium oxide, its super large capacity and excellent cycle performance make it attract much attention in the research and application of supercapacitor electrode materials. Scientific researchers have found that the good capacitance performance of ruthenium dioxide is mainly due to the RuO 2 The hydrated amorphous structure of nano-sized ruthenium oxide hydrate has more excellent electrochemical activity, so the preparation of ruthenium oxide hydrate with small particle size and high dispersion has become an important research content at home and abroad. Due to RuO 2 The price is expensive, and the instantaneous high-current discharge performance is poor, which i...

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Problems solved by technology

There are three main preparation methods: one, the traditional method is to use alkaline substances to precipitate ruthenium chloride to prepare carbon nanotube / hydration ruthenium oxide nanopowder composite material, and the performance of the prepared powder is relatively good, but The process is complicated and difficult to control; secondly, oxidizing ruthenium chloride is used to directly oxidize ruthenium chloride to prepare carbon nanotube-supported hydrated nano-ruthenium oxide. The preparation method of ruthenium ", this method is added into the ruthenium trichloride solution by carbon nanotube as carrier, uses hydrogen peroxide as oxidant to directly oxidize ruthenium trichloride, prepares carbon nanotube loaded hydrated nano ruthenium dioxide; Voltammetric method to prepare carbon nanotubes / hydrated ruthenium oxide electrodes on the substrate of growing carbon nanotubes, directly deposited on the substrate, the yield is low, and it is difficult to realize industrialization

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