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A preparation method of metal oxide/activated carbon fiber composite electrode material with controllable morphology

A technology of activated carbon fiber and composite electrode, which is applied in the fields of hybrid capacitor electrode, hybrid/electric double layer capacitor manufacturing, fiber processing, etc., can solve the problem that the metal oxide/activated carbon fiber composite electrode material cannot improve the specific capacitance value of the composite material, etc. Achieve the effect of no attenuation of specific capacitance value, strong controllability and wide application prospects

Inactive Publication Date: 2017-02-22
HEILONGJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problem that the existing metal oxide / activated carbon fiber composite electrode material cannot improve the specific capacitance value of the composite material by changing the shape, and provides a metal oxide / activated carbon fiber composite electrode material with controllable shape preparation method

Method used

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  • A preparation method of metal oxide/activated carbon fiber composite electrode material with controllable morphology
  • A preparation method of metal oxide/activated carbon fiber composite electrode material with controllable morphology
  • A preparation method of metal oxide/activated carbon fiber composite electrode material with controllable morphology

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specific Embodiment approach 1

[0017] Specific Embodiment 1: In this embodiment, a method for preparing a metal oxide / activated carbon fiber composite electrode material with controllable morphology is carried out according to the following steps:

[0018] 1. Preparation of polyacrylonitrile fiber: Add nitrate to N,N-dimethylformamide, sonicate until the nitrate is dissolved, then add polyacrylonitrile to the reaction system, and stir at room temperature for 6d~ 12d, obtain the polyacrylonitrile spinning solution; use the electrospinning device, take 5mL-20mL polyacrylonitrile spinning solution, control the end pressure of the micro-injection pump to 80mmHg-100mmHg, and the flow rate of the spinning solution to be 1mL / h-1.5mL / h h, with aluminum foil as the receiving screen, electrospinning is carried out under the conditions that the receiving distance is 20cm-25cm, the output voltage is 18kV-22kV, the air humidity is 0-40%, and the spinneret aperture is 0.4mm-0.6mm, to obtain Polyacrylonitrile fiber; the n...

specific Embodiment approach 2

[0022] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the nitrate described in step one is nickel nitrate hexahydrate. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0023] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the nitrate described in step one is cobalt nitrate hexahydrate. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a morphology controllable metal oxide / active carbon fiber combination electrode material, and relates to a preparation method of a combination electrode material, for solving the problem that the specific capacitance value of a composite material cannot be improved through changing morphology by use of a conventional metal oxide / active carbon fiber combination electrode material. The method comprises the following steps: taking polyacrylonitrile and nitrate with different mass ratios as raw materials, preparing metal iron-doped polyacrylonitrile fibers by use of electrostatic spinning, and preparing metal oxide / polyacrylonitrile-based active carbon fibers through pre-oxidation and carbonization. According to the invention, spinning is carried out by adding the nitrate, the nitrate forms the tadpole-like short fibers after being stretched, the morphology is continued through a pre-oxidation and carbonization process, the fibers are wound on the surfaces of the active carbon fibers or scattered among the active carbon fibers, the specific surface area of the active carbon fibers is increased, the surface utilization rate is enhanced, and the prepared active carbon fibers have quite high specific capacitance. The method provided by the invention is applied to preparation of metal oxide / active carbon fiber combination electrode materials with different morphologies.

Description

technical field [0001] The invention relates to a preparation method of a composite electrode material. Background technique [0002] The depletion of fossil energy and the intensification of environmental pollution. For example, in recent years, there have been large-scale smog in many places in my country. Environmental experts agree that motor vehicle exhaust, as a major producer of PM2.5, is the source of serious air pollution, and exhaust Pollution is directly related to oil. Therefore, the development of petroleum substitutes, that is, green energy, is imminent, and people pay more and more attention to the invention and utilization of environmentally friendly and efficient energy storage devices. Supercapacitor is a new environment-friendly energy storage element developed in the past ten years, and has a wide range of applications in many fields. Electrode materials are the core components of supercapacitors and play a key role in the performance of supercapacitors....

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/30H01G11/40D01D5/00D01F9/22
CPCY02E60/13
Inventor 金政苏琳杰赵东宇秦川丽
Owner HEILONGJIANG UNIV
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