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Large-scale preparation method and application of metal and metal derivative composited 2D carbon plate aerogel material

A metal derivative, aerogel technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, non-metallic elements, etc., can solve the problems of high cost, poor performance, complex production process, etc. The effect of high utilization rate, fast experiment and simple operation steps

Active Publication Date: 2018-08-21
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of complex production process, high cost and poor performance of commercial battery materials

Method used

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  • Large-scale preparation method and application of metal and metal derivative composited 2D carbon plate aerogel material
  • Large-scale preparation method and application of metal and metal derivative composited 2D carbon plate aerogel material
  • Large-scale preparation method and application of metal and metal derivative composited 2D carbon plate aerogel material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 3g agarose and 2g Fe(NO 3 ) 3 9H 2 O was added to 10mL deionized water to form a block. Then the block was placed in a microwave oven and heated for 30s, and the block melted to form a reddish-brown solution. After fully stirring the solution, continue to put it into the microwave oven for 120s. The solution was gradually boiled dry, forming a brown mass that filled and bubbled out of the beaker. Transfer the block to a tube furnace and heat it up to 900 degrees Celsius at a rate of 2 degrees per minute under a nitrogen atmosphere and keep it for 2 hours for calcination. After calcination, Fe 3 A black airgel composed of C particles composited with two-dimensional carbon sheets.

[0039] The above airgel was calcined in the air at 250 degrees Celsius for 20 hours to obtain Fe / Fe 3 o 4 The aerogel composed of particle-composite two-dimensional carbon sheets is used as a negative electrode material to make a lithium-ion battery test.

Embodiment 2

[0041] 3g agarose and 2g Co(NO 3 ) 2 ·6H 2 O was added to 10mL deionized water to form a block. Then the block was placed in a microwave oven and heated for 30s, and the block melted to form a red solution. After fully stirring the solution, continue to put it into the microwave oven for 120s. The solution was gradually boiled dry, forming a red mass that filled and bubbled out of the beaker. Transfer the block to a tube furnace and heat it up to 900 degrees Celsius at a rate of 2 degrees per minute under a nitrogen atmosphere and keep it for 2 hours for calcination. After calcination, a black airgel composed of Co particles composited with two-dimensional carbon sheets was obtained.

Embodiment 3

[0043] 3g agarose and 2g Ni(NO 3 ) 2 ·6H 2 O was added to 10mL deionized water to form a block. Then the block was placed in a microwave oven and heated for 30s, and the block melted to form a green solution. After fully stirring the solution, continue to put it into the microwave oven for 120s. The solution was gradually boiled dry, forming a pale green mass that filled and bubbled out of the beaker. Transfer the block to a tube furnace and heat it up to 900 degrees Celsius at a rate of 2 degrees per minute under a nitrogen atmosphere and keep it for 2 hours for calcination. After calcination, a black airgel composed of Ni particles composited with two-dimensional carbon sheets was obtained.

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Abstract

The invention discloses a large-scale preparation method and an application of a metal and metal derivative composited 2D carbon plate aerogel material and belongs to the technical field of preparation of functional nano-materials. Water is added to an agarose and metal salt mixture, a mixed solution is subjected to microwave heating treatment in a microwave reactor, composite foam of metal salt-agarose is obtained, the foam is further calcined, and carbon aerogel consisting of metal nanoparticle composited 2D carbon plates is obtained. The carbon aerogel prepared with the method has high specific surface area, high graphitization degree and relatively large 2D area, thereby having the characteristics of high conductivity, rapid ion transmission channels, highly active sites and the like,and having the advantages of high power capacity, high stability and high activity in energy storage and electrochemical catalysis reaction. The whole preparation process of the material is simple, the raw materials are cheap, and the material is suitable for large-scale production.

Description

technical field [0001] The invention relates to a preparation method of a two-dimensional carbon sheet airgel material compounded with metals and metal derivatives thereof, which can be used as energy storage and electrochemical catalysis materials, and belongs to the technical field of preparation of functional nanometer materials. Background technique [0002] The energy crisis is still a global problem that needs to be solved urgently. Extensive consumption of fossil energy leads to the depletion of fossil energy, and causes environmental pollution and global warming. The development of new energy technologies can effectively solve energy problems. Battery technology stores energy in the form of chemical energy, which is a green and efficient energy storage and conversion technology. Lithium-ion batteries have the characteristics of long cycle life, high energy density, low self-discharge, and environmental friendliness. They are widely used in mobile energy devices suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/525H01M10/0525C01G49/02C01G51/04C01G53/04C01G39/02C01B32/15C01B32/914C01B32/949B82Y30/00
CPCH01M4/362H01M4/525H01M10/0525B82Y30/00C01B32/15C01B32/914C01B32/949C01G39/02C01G49/02C01G51/04C01G53/04C01P2004/03C01P2002/72C01P2004/80Y02E60/10
Inventor 朱纪欣张桥黄维
Owner NANJING UNIV OF TECH
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