Preparation method of three-dimensional porous composite material

Abstract

The invention relates to a preparation method of a three-dimensional porous composite material, comprising the following steps: providing a salt solution of an inert metal and a salt solution of an active metal; providing a substrate, and electroplating the salt solution of the inert metal on the surface of the substrate to form Coating M; a carbon nanotube structure is arranged on the surface of the coating M; a salt solution of the active metal is electroplated on the surface of the carbon nanotube structure to form a coating N, and the substrate is peeled off to obtain a composite structure; performing high-temperature annealing on the composite structure so that the active metal and the inert metal in the composite structure form an alloy to obtain a prefabricated body; corroding the prefabricated body to form a porous structure to obtain a three-dimensional porous composite material.

Description

technical field [0001] The invention relates to a method for preparing a three-dimensional porous composite material, in particular to a method for preparing a three-dimensional porous composite material based on carbon nanotubes. Background technique [0002] At present, due to the high specific surface area, specific modulus and other characteristics of nanoporous metal materials, as well as the high thermal conductivity and high electrical conductivity of metal materials, they are widely used in catalysis, energy storage and conversion, biosensing, molecular It has broad application prospects in the fields of detection, noise reduction and vibration absorption, shielding, heat exchange, and electrochemistry. [0003] However, in the application process, the existing technology generally combines nanoporous metal materials themselves with other structures to obtain nanoporous metal composite materials. For example, the traditional assembly method of electrodes in devices i...

AI Technical Summary

Problems solved by technology

Although the nanoporous metal material unit has superior physical and chemical properties, the traditionally assembled macro-sized electrodes usually have a large internal resistance, which inhibits the high service performance of the nano-active material; and because the nanoporous metal composite material itself It is very brittle and does not have self-supporting properties, so that the obtained nanoporous metal composites still have problems of poor stability, low electrical conductivity and poor strength, which affect their applications

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