Preparation method and application of N-P-dopted carbon fiber/graphene/bacterial cellulose conducting film material

A bacterial cellulose and flexible electrode technology, applied in the preparation and application of nitrogen and phosphorus doped carbon fiber/graphene/bacterial cellulose flexible electrode materials, can solve the problem that flexible electrode materials do not have stability, cycle performance and mechanical properties and other issues, to achieve the effects of increased cycle performance, abundant resources, and low cost

Inactive Publication Date: 2016-05-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that the existing method of preparing flexible electrode materials does not have good stability, cycle performance and mechanical properties, and provides a method for preparing nitrogen and phosphorus doped carbon fiber / graphene / bacterial cellulose flexible electrode materials and its application

Method used

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  • Preparation method and application of N-P-dopted carbon fiber/graphene/bacterial cellulose conducting film material
  • Preparation method and application of N-P-dopted carbon fiber/graphene/bacterial cellulose conducting film material
  • Preparation method and application of N-P-dopted carbon fiber/graphene/bacterial cellulose conducting film material

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specific Embodiment approach 1

[0024] Embodiment 1: In this embodiment, a method for preparing a nitrogen-phosphorus-doped carbon fiber / graphene / bacterial cellulose flexible electrode material is performed according to the following steps:

[0025] 1. Soak the bacterial cellulose in deionized water for ultrasonic washing, then evenly disperse it in deionized water, and then transfer it to a homogenizer for high-speed stirring to obtain bacterial cellulose slurry for substrate;

[0026] 2. Another bacterial cellulose is soaked in deionized water for ultrasonic washing, freeze-dried to obtain dry bacterial cellulose; the dried bacterial cellulose is soaked in a dopant solution, ultrasonically treated after stirring, and then freeze-dried to obtain bacteria Cellulose precursor, the bacterial cellulose precursor is placed in a tube furnace for pyrolysis and carbonization to obtain carbon fibers doped with nitrogen and phosphorus; wherein the dopant solution is a mixed solution of urea and ammonium dihydrogen pho...

specific Embodiment approach 2

[0037] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the power of the ultrasonic wave is 1000w, and the frequency is 30KHz. Others are the same as the first embodiment.

specific Embodiment approach 3

[0038] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the condition of the ultrasonic washing in step 1 is an ultrasonic time of 1-10 hours. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method and application of a N-P-dopted carbon fiber / graphene / bacterial cellulose conducting film material. The invention relates to a preparation method and application of a flexible electrode material and aims to solve the problem that a conducting film material prepared according to the existing method has poor stability, cycling performance and mechanical property. The preparation method disclosed by the invention comprises the following steps: preparing bacterial cellulose pulp; preparing N-P-dopted carbon fiber; preparing N-P-dopted carbon fiber / graphene composite dispersion liquid; carrying out vacuum filtering on bacterial cellulose pulp to form a film; and then adding the N-P-dopted carbon fiber / graphene composite dispersion liquid and further carrying out vacuum filtration to form a film; and finally drying in vacuum. The N-P-dopted carbon fiber / graphene / bacterial cellulose conducting film material is applied to a supercapacitor. The N-P-dopted carbon fiber / graphene / bacterial cellulose conducting film material can load high active matter mass in unit area, can be synthesized simply, has controllable electrical conductivity and good rate capability, can be put into large-scale production and can be used for preparing a symmetric supercapacitor with high capacitive character. The invention belongs to the technical field of nanomaterial.

Description

technical field [0001] The invention relates to a preparation method and application of a nitrogen-phosphorus doped carbon fiber / graphene / bacterial cellulose flexible electrode material. Background technique [0002] Supercapacitors combine the advantages of batteries and traditional dielectric capacitors, and their energy density and power density fill the gap between batteries and traditional dielectric capacitors. Carbon materials have good cycle performance and high stability as electrode materials for supercapacitors. Doping carbon fibers with heteroatoms such as nitrogen, phosphorus, oxygen, and sulfur can effectively improve the electrochemical properties and surface properties of carbon fibers. [0003] With the development of flexible and bendable electronic devices, the development of flexible electrode materials with bending stability has become an important research direction in the field of energy storage. However, the existing flexible electrode materials have...

Claims

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Application Information

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IPC IPC(8): H01G11/40H01G11/36H01G11/48H01G11/86
CPCY02E60/13H01G11/40H01G11/36H01G11/48H01G11/86
Inventor 袁国辉刘荣马丽娜张芳平杨少强黎恩源张法宁
Owner HARBIN INST OF TECH
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