Electrostatic spinning-carbonization preparation method of foldable flexible pure nanometer carbon fiber

A carbon nanofiber and electrospinning technology, which is applied in the field of pure carbon nanofiber membrane material and its preparation, can solve the problems of unsatisfactory practical use, unsatisfactory battery electrochemical performance, poor flexibility and mechanical strength of carbon nanofiber, etc., and achieves excellent performance. The effect of flexibility, simple preparation method, and easy reaction conditions
CN107083584AActive Publication Date: 2017-08-22ZHEJIANG SCI-TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG SCI-TECH UNIV
Publication Date
2017-08-22

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Abstract

The invention relates to the field of a flexible energy storage system electrode material, in particular to an electrostatic spinning-carbonization preparation method of foldable flexible pure nanometer carbon fiber. The method comprises the following steps of (1) spinning solution preparation: zinc salt and PAN (polyacrylonitrile) are mixed, and are dissolved in DMF (N,N-Dimethylformamide); after the materials are fully stirred at 0 to 110 DEG C, a uniform spinning solution is obtained, wherein the mass percent of zinc salt in the spinning solution is 1 to 20 percent, and the mass percent of the PAN is 5 to 15 percent; (2) nanofiber preparation: the spinning solution obtained in the first step is spun into a nanofiber membrane by an electrostatic spinning method; (3) flexible nanometer carbon fiber preparation: the nanofiber membrane obtained in the second step is preoxidized for 0.5 to 10h at the temperature of 150 to 280 DEG C; then, carbonization is performed for 1 to 10h at the temperature of 550 to 1600 DEG C under the inert gas protection and the foldable flexible pure nanometer carbon fiber is obtained.
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Description

Technical field

[0001] The invention relates to the field of electrode materials for flexible energy storage systems, in particular to a multi-foldable pure carbon nanofiber membrane material which can be applied to the negative electrode of a flexible lithium ion battery and a preparation method thereof. Background technique

[0002] With the development of society and economy, energy and environmental issues have become increasingly prominent. Therefore, the search for green sustainable energy and the development of energy storage technology equipped with it have attracted much attention. Lithium-ion batteries are widely used in production and life because of their green, safe, and high-capacity advantages. However, the capacity and service life of lithium-ion batteries on the market have not yet reached consumer demand. The recent development of wearable electronic devices puts higher and more special requirements on the use conditions and portability of energy storage device...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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