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Method for preparing three-dimensional graphene/ foamed nickel composite material by taking loofah sponge as raw material

A technology of composite materials and loofah, which is applied in the field of graphene material synthesis, achieves the effect of simple method, less over-reliance and good effect

Active Publication Date: 2019-03-15
江苏江科石墨烯研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current research on biomass materials is the preparation of porous carbon materials, while the preparation of three-dimensional graphene is less researched, and there is no literature report.

Method used

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  • Method for preparing three-dimensional graphene/ foamed nickel composite material by taking loofah sponge as raw material
  • Method for preparing three-dimensional graphene/ foamed nickel composite material by taking loofah sponge as raw material
  • Method for preparing three-dimensional graphene/ foamed nickel composite material by taking loofah sponge as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Wash the loofah and place it in a vacuum drying oven, carbonize and deoxidize at 180°C, degumming for 6 hours, then cool naturally to room temperature, and pulverize into powder for use. Soak commercially available nickel foam in 3mol / L hydrochloric acid for 15 minutes, wash it alternately with deionized water and acetone four times, and dry it in a vacuum oven at 60°C.

[0033] (2) Mix and grind the deoxidized and degummed loofah powder and sodium carbonate powder evenly in a mass ratio of 2:1, add 10mL of polyethylene glycol 400 dropwise and stir to form a slurry, and evenly coat it in step (1) purification On the treated nickel foam, an intermediate product is obtained.

[0034] (3) Put the intermediate product into a high-temperature tube furnace, and under the protection of high-purity nitrogen, raise the temperature to 1000°C at a constant speed of 10°C / min, and keep it warm for 2 hours. After cooling to room temperature, take the product out for use. Soak in...

Embodiment 2

[0037] (1) Wash the loofah and place it in a vacuum drying oven, carbonize and deoxidize at 190°C, degumming for 7 hours, then cool naturally to room temperature, and pulverize into powder for use. Soak commercially available nickel foam in 3mol / L hydrochloric acid for 15 minutes, wash it alternately with deionized water and acetone four times, and dry it in a vacuum oven at 60°C.

[0038] (2) Mix and grind the deoxidized and degummed loofah powder and sodium carbonate powder evenly in a mass ratio of 2:2, add 11mL of polyethylene glycol 400 dropwise and stir to form a slurry, and evenly coat it in step (1) purification On the treated nickel foam, an intermediate product is obtained.

[0039] (3) Put the intermediate product into a high-temperature tube furnace, and under the protection of high-purity nitrogen, raise the temperature to 1100°C at a constant speed of 10°C / min, and keep it warm for 3 hours. After cooling to room temperature, take the product out for use. Soak in...

Embodiment 3

[0042] (1) Wash the loofah and place it in a vacuum drying oven, carbonize and deoxidize at 200°C, degumming for 8 hours, then cool naturally to room temperature, and pulverize into powder for use. Soak commercially available nickel foam in 3mol / L hydrochloric acid for 15 minutes, wash it alternately with deionized water and acetone four times, and dry it in a vacuum oven at 60°C.

[0043] (2) Mix and grind the deoxidized and degummed loofah powder and sodium carbonate powder evenly according to the mass ratio of 2:3, add 12mL polyethylene glycol 400 dropwise and stir to form a slurry, and evenly coat in step (1) On the purified nickel foam, an intermediate product is obtained.

[0044] (3) Put the intermediate product into a high-temperature tube furnace, and under the protection of high-purity nitrogen, raise the temperature to 1200 °C at a constant speed of 10 °C / min, and keep it warm for 4 hours. After cooling to room temperature, the product is taken out for use Soak in ...

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Abstract

The invention belongs to the field of graphene material synthesis, and particularly relates to a method for preparing a three-dimensional graphene / foamed nickel composite material by taking loofah sponge as a raw material. The method comprises the following specific steps that: after the loofah sponge is cleaned, carrying out carbonization, carrying out natural cooling to the room temperature, and smashing to obtain loofah sponge powder; carrying out purification processing on the foamed nickel; weighing the loofah sponge powder and sodium carbonate powder, after grinding is carried out, dripping polyethylene glycol 400, stirring the mixture into a slurry form, and coating the foamed nickel subjected to purification processing with the slurry to obtain an intermediate product; and puttingthe intermediate product in a high-temperature tube furnace, introducing pure nitrogen, carrying out calcination, after the intermediate product is cooled to the room temperature, carrying out repeated dipping by distilled water until the pH (Potential of Hydrogen) of the solution is neutral, and drying to obtain the three-dimensional graphene / foamed nickel composite material. The invention provides a preparation method for novel biomass three-dimensional porous graphene. The method has the advantages of wide loofah sponge raw material source, low price, simple preparation process technology, environment protection, wide industrial prospect and huge social and economic benefit.

Description

technical field [0001] The invention belongs to the field of graphene material synthesis, and in particular relates to a method and application for preparing a three-dimensional graphene / foamed nickel composite material using loofah as a raw material. Background technique [0002] In the process of the development of modern chemical technology, fossil fuels play an important role, leading to the sudden reduction of fossil fuels, environmental pollution and global warming. Therefore, in order to solve the above problems, it is necessary to find a new type of high-efficiency energy storage device to efficiently transmit recyclable resources. As a new type of energy storage device, supercapacitors are widely used in various aspects because of their fast charge and discharge rates, good cycle stability, high power density and environmental friendliness. In order to achieve more sustainable development and application of supercapacitors, it is necessary to increase their energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/86
CPCH01G11/24H01G11/86Y02E60/13
Inventor 章明美马天娇刘洪王滢王馨雨汪安
Owner 江苏江科石墨烯研究院有限公司
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