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Nylon engineering plastic high-valued electrode active material and preparation method thereof

A technology of electrode active materials and engineering plastics, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of expensive conjugated organic electrode materials, gaps in specific capacity and rate performance, and restrictions on wide application, and achieve benefits that can be achieved The effect of continuous development, increased added value, and good thermal stability

Inactive Publication Date: 2019-05-10
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the intrinsic electronic conductivity of conjugated organic electrode materials and the limited utilization of active groups lead to a large gap in their specific capacity and rate performance compared with traditional inorganic materials. More importantly, conjugated organic electrode materials The price is relatively expensive, which limits its wide application
[0004] Nylon engineering plastics are a kind of common organic polymer engineering plastics. They are cheap and have stable thermal and mechanical properties. relatively low value

Method used

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  • Nylon engineering plastic high-valued electrode active material and preparation method thereof
  • Nylon engineering plastic high-valued electrode active material and preparation method thereof
  • Nylon engineering plastic high-valued electrode active material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] In this embodiment one, pure nylon 6 is used as the electrode active material, specifically:

[0029] Mix and grind commercially available nylon 6, conductive agent (SP) and polyvinylidene fluoride (PVDF) evenly according to the mass ratio of 6:3:1, add an appropriate amount of N-methyl-2-pyrrolidone (NMP) dropwise according to the situation, and grind Stir to form a stable slurry. Coat it into a 0.06mm-thick pole piece, dry it in a blast drying oven at 60°C for 3-6 hours, then move it into a vacuum drying oven and dry it at 80°C for 12 hours, take it out after cooling, and obtain the working electrode. The prepared working electrode was cut into pole pieces with a diameter of 10mm, and half-cell assembly was carried out in a glove box, wherein the electrolyte was 1M LiPF 6 , the electrolyte is prepared by mixing ethylene carbonate (EC) and dimethyl carbonate (DMC) in a volume ratio of 1:1.

[0030] Performance Characterization:

[0031] Such as figure 1 As shown, i...

Embodiment 2

[0035] In the second embodiment, nylon 66 / graphene composite material is used as the electrode active material.

[0036] Preparation:

[0037]Take 4.8g of commercially available nylon 66 powder and 0.2g of graphene, add 20mL of N-methylpyrrolidone, mix well, transfer to a ball mill jar, and go through a high-speed mechanical ball mill for 6 hours at a speed of 200rpm. Washing with ethanol and drying in vacuum to obtain the nylon 66 / graphene composite electrode active material.

[0038] Used in batteries:

[0039] Mix and grind the nylon 66 / graphene composite electrode active material prepared in the above steps with conductive agent (SP) and polyvinylidene fluoride (PVDF) evenly according to the mass ratio of 6:3:1, and add an appropriate amount of N-methyl - 2-Pyrrolidone (NMP), ground and stirred into a stable slurry. Coat it into a 0.06mm-thick pole piece, dry it in a blast drying oven at 60°C for 3-6 hours, then move it into a vacuum drying oven and dry it at 80°C for 1...

Embodiment 3

[0045] The method for providing nylon 610 / carbon fiber composite electrode active material in the present embodiment three is specifically:

[0046] Take 4.5g of commercially available nylon 610 powder and 0.5g of carbon fiber, add 50mL of N,N-dimethylformamide, mix evenly, and undergo high-speed shearing for 2 hours at a speed of 20,000rpm. Suction filtration, washing with ethanol, and vacuum drying to obtain the nylon 610 / graphene composite electrode active material.

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Abstract

The invention provides a nylon engineering plastic high-valued electrode active material and a preparation method thereof. The nylon engineering plastic high-valued electrode active material is a nylon or nylon / carbon composite material, wherein the nylon / carbon composite material is formed by combining nylon and a carbon nanometer material. The invention creatively proposes to take nylon engineering plastic as the electrode active material, the material does not comprise a conjugated structure which is possessed by the electrode active material, while the material has favorable thermal stability, mechanical flexibility and electrochemical oxidization-reduction reaction activity, so that the electrode active material has potentials when used as a metal ion battery electrode active material; and meanwhile, the additional value of the nylon engineering plastic can be improved by taking the material as the electrode active material, the application of mineral resources such as a non-renewable transition metal oxide and graphite is reduced, and the material is very beneficial for sustainable development of energy utilization.

Description

technical field [0001] The invention belongs to the field of electrode materials, and in particular relates to a nylon engineering plastic high-value electrode active material and a preparation method thereof. Background technique [0002] Energy is the driving force of world civilization and the basis for human survival and development. With the rapid increase of human society's demand for energy, the impact of environmental pollution and the pressure on energy supply have attracted widespread attention. Compared with other secondary battery systems, lithium-ion batteries have the advantages of high energy ratio, long cycle life, low self-discharge, high working voltage, wide working temperature, and portability. They are used in mobile phones, computers, electric vehicles, and aerospace, There are broad application prospects in the fields of national smart grid energy storage and peak regulation. At present, most lithium-ion batteries use compounds that can reversibly in...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/583H01M4/60H01M10/0525H01M10/054
CPCY02E60/10
Inventor 杨应奎黄志勇何承恩邱胜强韩小彦
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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