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Method for preparing biomass base film by taking strip-shaped graphene oxide as binder

A binder preparation and strip-shaped technology, which is applied in the field of flexible membrane materials, can solve the problems that flexible electrodes cannot be used directly, and achieve the effects of enhancing electrochemical performance, improving mechanical strength, and reducing diffusion resistance

Active Publication Date: 2020-04-17
BEIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the problem that powdery biomass carbon materials cannot be directly used in flexible electrodes, broadens the application of biomass carbon-based materials in the field of flexible energy storage devices, and promotes the efficient utilization of plant resource materials

Method used

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  • Method for preparing biomass base film by taking strip-shaped graphene oxide as binder
  • Method for preparing biomass base film by taking strip-shaped graphene oxide as binder
  • Method for preparing biomass base film by taking strip-shaped graphene oxide as binder

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A kind of strip-shaped graphene oxide prepares the method for biomass-based film as binding agent, specifically comprises the following steps:

[0040] 1) Preparation of biomass carbon tubes: using the one-dimensional tubular structure as the raw material, put it in a tube furnace, and carry out carbonization and calcining under a nitrogen atmosphere, with a heating rate of 5 °C min -1 , the calcination temperature is 800°C, and the holding time is 2h; the obtained biomass carbon precursor is mixed with potassium hydroxide at a mass ratio of 1:2, then placed in a tube furnace, and activated for calcination under a nitrogen atmosphere , the heating rate is 5°C min -1 , the calcination temperature is 800°C, and the holding time is 2h; -1 Mixed, the mixed solution includes deionized water and 68% nitric acid in a volume ratio of 2:1. Then it was transferred to a high-pressure reactor for hydrothermal oxidation treatment, the hydrothermal temperature was 120°C, and the ho...

Embodiment 2

[0046] A kind of strip-shaped graphene oxide prepares the method for biomass-based film as binding agent, specifically comprises the following steps:

[0047] 1) Preparation of biomass carbon tubes: Catkins with a one-dimensional tubular structure were used as raw materials, placed in a tube furnace, carbonized and calcined in a nitrogen atmosphere, and the heating rate was 10 °C min -1 , the calcination temperature is 1000°C, and the holding time is 1h; the obtained biomass carbon precursor is mixed with potassium hydroxide at a mass ratio of 1:4, then placed in a tube furnace, and activated for calcination under a nitrogen atmosphere , the heating rate is 10°C min -1 , the calcination temperature is 1000℃, and the holding time is 1h; -1 Mixed, the mixed solution includes deionized water and 68% nitric acid in a volume ratio of 5:1. Then move it into a high-pressure reactor for hydrothermal oxidation treatment, the hydrothermal temperature is 150°C, and the holding time is ...

Embodiment 3

[0053] A kind of strip-shaped graphene oxide prepares the method for biomass-based film as binding agent, specifically comprises the following steps:

[0054] 1) Preparation of biomass carbon tubes: Cotton with a one-dimensional tubular structure was used as raw material, placed in a tube furnace, carbonized and calcined in a nitrogen atmosphere, and the heating rate was 2 °C min -1 , the calcination temperature is 700°C, and the holding time is 4h; the obtained biomass carbon precursor is mixed with potassium hydroxide at a mass ratio of 1:1, then placed in a tube furnace, and activated for calcination under a nitrogen atmosphere , the heating rate is 2°C min -1 , the calcination temperature is 900°C, and the holding time is 2h; -1 Mixed, the mixed solution includes deionized water and 68% nitric acid in a volume ratio of 3:1. Then move it into a high-pressure reactor for hydrothermal oxidation treatment, the hydrothermal temperature is 100°C, and the holding time is 4h; af...

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Abstract

The invention discloses a method for preparing a biomass base film by taking strip-shaped graphene oxide as a binder, and belongs to the technical field of flexible materials. The preparation method comprises the following steps: by taking one-dimensional tubular biomass as a carbon source, carrying out carbonization calcination, activation calcination and hydrothermal oxidation to obtain a biomass carbon tube material, and carrying out space self-assembly and reduction treatment on the biomass carbon tube material by taking a small amount of strip-shaped graphene oxide as a binder to obtain the biomass carbon-based composite film. According to the prepared composite film, graphene agglomeration is hindered by utilizing one-dimensional tubular fibers while an interlayer rapid ion transmission channel is constructed for a flexible supercapacitor electrode so as to achieve the integration of functions of a 3D ion diffusion channel, an overall conductive network, an energy storage space and the like, so that the electrochemical performance of the flexible supercapacitor can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of flexible membrane materials, and more specifically relates to a method for preparing a biomass-based membrane using strip-shaped graphene oxide as a binder. Background technique [0002] With the rapid development of science and technology, smart wearable electronic products are gradually realizing various functional applications such as navigation, communication, motion monitoring, and health monitoring. However, with the continuous enrichment of the application functions of electronic products, the energy consumption becomes larger and larger. At the same time, it is required that the matching energy storage device should have high flexibility and can be integrated with it to provide power support for it. [0003] Graphene is considered as a flexible electrode material with great potential because of its good electrical conductivity, high specific surface area, strong mechanical properties, and easy pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184C01B32/318C01B32/348D01F9/16H01G11/24H01G11/30H01G11/32H01G11/42H01G11/86
CPCC01B32/184C01B32/318C01B32/348D01F9/16H01G11/30H01G11/32H01G11/24H01G11/42H01G11/86Y02E60/13
Inventor 盛利志赵云云江丽丽张鑫时君友
Owner BEIHUA UNIV
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