Preparation method of carbon nanotube yarn-based flexible supercapacitor composite electrode material

A technology of supercapacitors and carbon nanotubes, applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of low capacitance and energy density, achieve excellent electrochemical performance, no steam emission, and simple process controllable effect

Inactive Publication Date: 2017-10-13
江西省世道新能源科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

However, purely using carbon nanotube yarns as electrode materials, due to the limitation of its storage mechanism, its stored capacitance and energy density are not high.

Method used

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  • Preparation method of carbon nanotube yarn-based flexible supercapacitor composite electrode material
  • Preparation method of carbon nanotube yarn-based flexible supercapacitor composite electrode material

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[0021] refer to figure 1 , the specific implementation method adopts the following technical scheme: the preparation method of carbon nanotube yarn-based flexible supercapacitor composite electrode material, and its preparation steps are:

[0022] (1) Preparation of carbon nanotube (CNT) yarn by textile method: the carbon nanotube array prepared by chemical vapor deposition is pulled out from the array carbon nanotube by a motor under the condition that the spinning speed is controlled at 1000-5000rpm. Carbon nanotubes are rotated and twisted to obtain carbon nanotube yarns with a diameter of 20-50 μm;

[0023] (2) Electrodeposition compound preparation of electrode material crude product: adopt three-electrode electrodeposition, with the carbon nanotube yarn gained in step (1) as working electrode, Ag / AgCl is reference electrode, metal platinum is contrast electrode, Conducting electrodeposition in an electroplating solution containing a transition state metal salt to obtain...

Embodiment 1

[0031] Embodiment 1: the preparation method of carbon nanotube yarn-based flexible supercapacitor composite electrode material, its preparation steps are: the carbon nanotube yarn with diameter of about 30 μ m is spun and prepared under the condition of rotating speed of 5000 rpm by self-made spinning equipment; The constant potential electrodeposition method uses the carbon nanotube yarn as a working electrode, Ag / AgCl as a reference electrode, metal platinum as a contrast electrode, and a plating solution containing 0.5mol / L Co(NO 3 ) 2 , 0.5mol / L Ni(NO 3 ) 2 , 0.1mol / L NaNO 3 The aqueous solution was deposited under 1.3V constant voltage condition for 10min. After the electrodeposition was completed, the carbon nanotube composite yarn was heated in a muffle furnace at 250°C for 150min to obtain the carbon nanotube yarn loaded with tricobalt tetroxide and nickel oxide ( CNT / Co 3 o 4 @NiO) composite material; soak the obtained composite material in the prepared graphene ...

Embodiment 2

[0032] Embodiment 2: the preparation method of carbon nanotube yarn-based flexible supercapacitor composite electrode material, its preparation steps are: spinning and preparing the carbon nanotube yarn of diameter about 35 μm under the condition of 5000rpm by spinning equipment; Potential electrodeposition method, with the carbon nanotube yarn as the working electrode, Ag / AgCl as the reference electrode, metal platinum as the reference electrode, and the plating solution contains 0.5mol / L Co(NO 3 ) 2 , 0.1mol / L NaNO 3 The aqueous solution was deposited under the condition of 1.3V constant voltage for 10min. After the electrodeposition was completed, the carbon nanotube composite yarn was heated in a muffle furnace at 250°C for 120min to obtain the carbon nanotube yarn loaded with tricobalt tetroxide (CNT / Co 3 o 4 ) composite material; the obtained composite material is immersed in the prepared graphene ink of 10mg / ml concentration for 10min, and then dried in an oven at 80°...

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Abstract

The invention discloses a preparation method of a carbon nanotube yarn-based flexible supercapacitor composite electrode material, and relates to the technical field of a supercapacitor electrode material. The preparation method comprises the steps of preparing carbon nanotube yarn by a spinning method, combing to prepare a rough product of the electrode material by an electroplating method, heating and purifying the electrode material, preparing graphene ink, performing graphene ink impregnation on the composite material, and finally obtaining a carbon nanotube (CNT)/transient-state metal oxide/graphene (GN) composite electrode material, wherein a transient-state metal oxide attached onto a carbon nanotube comprises Co3O4 nanoparticles, NiO nanoparticles or MnO2 nanoparticles. The preparation method has the characteristics of wide application prospect, excellent electrochemical performance and green and environmental-friendly process and is simple and practical, and promotion and application are easy.

Description

technical field [0001] The invention relates to the technical field of supercapacitor electrode materials, in particular to a method for preparing a carbon nanotube yarn-based flexible solid supercapacitor composite electrode material. Background technique [0002] As the most basic driving force for human survival and development in the 21st century, energy is one of the ten major problems that need to be solved urgently in today's world. How to develop a sustainable new energy source in the future is a common problem faced by scientists and engineers all over the world. Batteries and supercapacitors are the most commonly used and most widely used energy storage devices. Compared with batteries, supercapacitors have the advantages of high power density, cycle life of more than 10,000 times, fast charge and discharge rate, and wide operating temperature. With the characteristics of simple structure and stable properties, it has been widely used in consumer electronics indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/36H01G11/46
CPCY02E60/13H01G11/86H01G11/30H01G11/36H01G11/46
Inventor 黄征峰
Owner 江西省世道新能源科技有限公司
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