Preparation method and application of arrayed carbon nanotube foam metal composite substrate

Abstract

The invention discloses a preparing method and application of an array carbon nanotube foam metal composite substrate, and belongs to the technical field of functional materials. The preparing methodspecifically comprises the steps that array carbon nanotubes grow, plasma treatment is conducted on the surfaces of the array carbon nanotubes, the foam metal substrate is cleaned up, appropriate positive pressure is exerted by using a tablet press to mechanically composite the array carbon nanotubes and foam metal, and the array carbon nanotube foam metal composite substrate is obtained. Comparedwith a traditional energy storage device electrode materials such as foam metal, the carbon nanotube composite substrate prepared by the method greatly increases the specific surface area of an electrode, solves the problems such as poor contact between an active material and a conductive network and the active material easy to fall off caused by non-firm adhesion, increases the structure stability and flexibility of an electrode system, meanwhile, improves the impact resistance and safety of the electrode. The prepared array carbon nanotube foam metal composite substrate is used in the fieldof supercapacitors, and the prepared electrode has ultra-high cyclic stability.

Description

technical field

[0001] The invention belongs to the field of functional materials, and in particular relates to a method for preparing an arrayed carbon nanotube foam metal composite substrate and the application of the composite substrate in energy devices. Background technique

[0002] In the application of energy storage devices, metal foam is often used as an electrode substrate because of its low density, high porosity, and large specific surface area; its network structure can provide good conductivity and support for active materials, and its open pores The three-dimensional structure can serve as electrolyte channel, which is beneficial to ion transport. However, the traditional metal foam has poor hydrophilicity, so that the active material adhering to it cannot fully react with the electrolyte flowing in the gap, resulting in a low electrode capacity. In the process of preparation and use of the electrode device, due to insufficient adhesion strength between the a...

Images