Novel skin/core-layer composite fiber as well as preparation method and application thereof

Abstract

The invention discloses a novel skin/core-layer composite fiber as well as a preparation method and application thereof. The novel skin/core-layer composite fiber comprises a carbon nanotube fiber and an electroconductive polymer coated on the carbon nanotube fiber. The preparation method comprises the following steps: firstly, preparing the carbon nanotube fiber by using an array spinning method, a floating catalytic spinning method, a solvent spinning method or the like, then acidizing the carbon nanotube fiber, and depositing the electroconductive polymer on the surface of the acidized carbon nanotube fiber to obtain the bicompoent composite fiber with electroconductive polymer as a skin layer and carbon nanotube fiber as a core layer. The composite fiber has the characteristics of good linear capacitance characteristic, light weight, high strength and the like, is simple, convenient and rapid in preparation method, and is formed through two steps, and the whole preparation process is performed at normal temperature and normal pressure and is low in energy consumption, high in efficiency and convenient to operate.

Description

technical field [0001] The invention relates to a novel skin-core composite fiber and a preparation method thereof, in particular to a novel skin-core composite fiber with a carbon nanotube fiber as the core and a conductive polymer as the skin layer and a preparation method thereof, belonging to nano-micro-composite materials field. Background technique [0002] Capacitor has high energy density, power density and long cycle life, etc. As a clean and efficient new energy storage device, it has attracted more and more researchers' attention. It has great potential in the fields of electric vehicles, mobile communications, and national defense technology. Broad application and development prospects. Among them, the electrode material is the bottleneck restricting the capacitor, and it is also a key factor affecting the development of supercapacitors. At present, the research on electrode materials is mainly focused on the development of hybrid capacitors, pseudocapacitive m...

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Problems solved by technology

At present, there are also a small number of reports on linear capacitor electrodes, but most of them use metal wires or non-conductive yarns as electrodes. These materials are difficult to balance in terms of conductivity, specific surface area, and flexibility. Therefore, the market is eager for new and practical linear capacitors. Capacitor requirements are extremely urgent

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