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A kind of preparation method and application of bacterial cellulose/activated carbon fiber/carbon nanotube membrane material

A technology of bacterial cellulose and activated carbon fiber, which is applied in the manufacture of hybrid/electric double layer capacitors, electrodes of hybrid capacitors, etc., can solve the problems of high cost, complex preparation process, lack of stability and mechanical properties, etc. The effect of simple preparation process and excellent recyclability

Inactive Publication Date: 2017-11-14
HARBIN INST OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a bacterial cellulose / activated carbon fiber / carbon nanotube film material and to solve the problems of complex preparation process, high cost, and lack of good stability and mechanical properties of the existing flexible electrode materials. its application

Method used

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  • A kind of preparation method and application of bacterial cellulose/activated carbon fiber/carbon nanotube membrane material
  • A kind of preparation method and application of bacterial cellulose/activated carbon fiber/carbon nanotube membrane material
  • A kind of preparation method and application of bacterial cellulose/activated carbon fiber/carbon nanotube membrane material

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specific Embodiment approach 1

[0026] Specific embodiment one: the preparation method of a kind of bacterial cellulose / activated carbon fiber / carbon nanotube membrane material of this embodiment, carries out as follows:

[0027] 1. Cut bacterial cellulose into pieces and soak in deionized water for ultrasonic washing, then freeze with liquid nitrogen and freeze-dry for 15-30 hours to obtain spare bacterial cellulose;

[0028] 2. Place the spare bacterial cellulose in a tube furnace for high-temperature pyrolysis to obtain activated carbon fibers, then add a surfactant to the activated carbon fibers, and then disperse them in deionized water to obtain an activated carbon fiber dispersion;

[0029] 3. Cut the bacterial cellulose into pieces, soak it in deionized water and ultrasonically wash it, then place it in deionized water, stir to make it evenly dispersed, and then transfer it to a homogenizer for stirring to obtain a bacterial cellulose slurry;

[0030] 4. Add a surfactant to the acidified carbon nanot...

specific Embodiment approach 2

[0038] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the bacterial cellulose is bacterial cellulose leftovers. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0039] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the condition of the ultrasonic cleaning in step 1 is ultrasonic time of 10 hours, and the deionized water is replaced every hour. Others are the same as in the first or second embodiment.

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Abstract

A method for preparing a bacterial cellulose / active carbon fiber / carbon nanotube film material and application. The invention relates to a method for preparing a film material and application of the film material, and aims to solve the problem that an existing flexible electrode material is complicated in preparation technology and high in cost, and does not have good stability and mechanical property. The method includes: preparing standby bacterial cellulose, and preparing an active carbon fiber dispersion liquid; preparing a bacterial cellulose pulp; and preparing a composite material dispersion liquid, performing vacuum filtration on the bacterial cellulose pulp to form a film, and then adding the composite material dispersion liquid to continue to perform suction filtration and drying, thereby obtaining the bacterial cellulose / active carbon fiber / carbon nanotube film material. The material is applied to a supercapacitor. Large-scale production of the material can be realized, the preparation technology is simple, cost is low, and the stability and mechanical property of a conducting film material are good, and the supercapacitor made of the material has a very good capacitive character. The invention belongs to the technical field of nanometer materials.

Description

technical field [0001] The invention relates to a preparation method and application of a membrane material. Background technique [0002] Traditional energy sources are increasingly depleted, stimulating people to look for alternative energy sources and efficient energy storage devices, and supercapacitors have high power density and high energy density, and are used in hybrid electric vehicles, electric vehicles, portable electronic devices and other important fields have always been favored by people. [0003] In today's society, the demand for energy storage of flexible and bendable devices is rapidly increasing, and people urgently need to develop the next generation of cheap, soft and bendable supercapacitors, and electrode materials are the most important components. However, the preparation process of existing flexible electrode materials is complicated, the cost is high, and they do not have good stability and mechanical properties. Therefore, it is particularly i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/36H01G11/40H01G11/86
Inventor 袁国辉刘荣马丽娜张芳平黎恩源张法宁
Owner HARBIN INST OF TECH
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