A preparation method of a loaded nano copper mesoporous graphite carbon nitride negative electrode material and a material

A technology of graphitic carbon nitride, negative electrode material, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc. Can not meet and other problems, to achieve the effect of improving high-current charge and discharge performance, enhancing electrical conductivity, and modulating surface chemical properties

Active Publication Date: 2018-12-21
DONGGUAN KAIJIN NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, C 3 N 4 The preparation method of the material often adopts the hard template method, and the main research and application focus on the photocatalytic performance, extraction and adsorption materials, etc., and the C synthesized by the traditional hard template method 3 N 4 There are many shortcomings in the material: 1. What this method obtains is a block material with a large active specific surface area and a large particle size, which does not meet the actual application requirements; 2. As a conductor material, the prepared C 3 N 4 The electronic structure or energy band structure cannot meet the specific requirements of a specific material

Method used

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  • A preparation method of a loaded nano copper mesoporous graphite carbon nitride negative electrode material and a material
  • A preparation method of a loaded nano copper mesoporous graphite carbon nitride negative electrode material and a material
  • A preparation method of a loaded nano copper mesoporous graphite carbon nitride negative electrode material and a material

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Embodiment 1

[0029] Embodiment 1: This embodiment provides a method for preparing a loaded nano-copper mesoporous graphite carbon nitride negative electrode material, and the supported nano-copper mesoporous graphite carbon nitride negative electrode material prepared by this method, specifically prepared The process includes:

[0030] S1: Put melamine in a crucible with a lid, seal the crucible with tinfoil, put it in a muffle furnace, heat it up to 560°C at a heating rate of 4°C / min, keep it warm for 3 hours, and then cool it naturally to room temperature , to obtain a light yellow block solid material, and finally to obtain powdered g-C by grinding 3 N 4 Material.

[0031] S2: The synthesis method of supported nano-copper mesoporous graphite carbon nitride is as follows: 510mg g-C 3 N 4 Put it into 100mL deionized water, and get g-C by ultrasonic 3 N 4 Dispersion, add 80mg CuCl dropwise to the dispersion 2 and 10 mL of water, and stirred at room temperature for 10 hours. Add 1mo...

Embodiment 2

[0032] Embodiment 2: This embodiment provides a method for preparing a loaded nano-copper mesoporous graphite carbon nitride negative electrode material, and the supported nano-copper mesoporous graphite carbon nitride negative electrode material prepared by this method, specifically prepared The process includes:

[0033] S1: Put melamine in a crucible with a lid, seal the crucible with tinfoil, put it in a muffle furnace, heat it up to 540°C at a heating rate of 3°C / min, keep it warm for 6 hours, and then cool it naturally to room temperature , to obtain a light yellow block solid material, and finally to obtain powdered g-C by grinding 3 N 4 Material.

[0034] S2: The synthesis method of supported nano-copper mesoporous graphite carbon nitride is as follows: 550mg g-C 3 N 4Put it into 120mL deionized water, sonicate to get g-C 3 N 4 Dispersion, add 85mg CuCl dropwise to the dispersion 2 and 5 mL of water, and stirred at room temperature for 9 hours. Add 1 mol / L NaOH...

Embodiment 3

[0035] Embodiment 3: This embodiment provides a method for preparing a loaded nano-copper mesoporous graphite carbon nitride negative electrode material, and the supported nano-copper mesoporous graphite carbon nitride negative electrode material prepared by this method, specifically prepared The process includes:

[0036] S1: Put melamine in a crucible with a lid, seal the crucible with tinfoil, put it in a muffle furnace, heat it up to 570°C at a heating rate of 5°C / min, keep it warm for 6 hours, and then cool it naturally to room temperature , to obtain a light yellow block solid material, and finally to obtain powdered g-C by grinding 3 N 4 Material.

[0037] S2: The synthesis method of supported nano-copper mesoporous graphite carbon nitride is as follows: 550mg g-C 3 N 4 Put it into 100mL deionized water, and get g-C by ultrasonic 3 N 4 Dispersion, add 80mg CuCl dropwise to the dispersion 2 and 10 mL of water, and stirred at room temperature for 11 hours. Add 1mo...

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Abstract

The invention discloses a preparation method of a loaded nano copper mesoporous graphite carbon nitride negative electrode material and a material. The method comprises dispersing g-C3N4 material in deionized water to obtain g-C3N4 dispersion, adding aqueous solution of divalent copper salt dropwise to g- C3N4 dispersion and stirring at room temperature for a period of time to obtain a mixed solution; dropwise adding alkali metal hydroxide aqueous solution into the mixed solution, adjusting the pH value, stirring for a period of time, and then dropwise adding reductant aqueous solution to reduce the divalent copper salt to elemental copper; After filtration, washing and drying, obtaining the loaded nano-copper mesoporous graphite carbon nitride anode material. Compared with the prior art,the mesoporous graphite carbon nitride (g-C3N4) is prepared by a thermal polymerization method, and the microstructure and the electronic state of the material are changed by doping metal, the electric conductivity is enhanced, the electrons are uniformly distributed on the surface of the material, the polarization is reduced, and the large current charging and discharging performance is improved.

Description

technical field [0001] The invention relates to the technical field of negative electrode materials for lithium ion batteries, in particular to a preparation method and material of a loaded nanometer copper mesoporous graphite carbon nitride negative electrode material. Background technique [0002] At present, there are the following types of negative electrode materials for lithium-ion batteries: graphitized carbon materials, amorphous carbon materials, nitrides, silicon-based materials, tin-based materials, and new alloys. Such as mesocarbon microspheres MCMB and CMsl materials, the volume expansion of these materials during the lithium intercalation and deintercalation process is basically 9%-13%, suitable for lithium intercalation and deintercalation, and the charge-discharge specific capacity can reach more than 300mAh / g. The efficiency is above 90%, the irreversible capacity is less than 50mAh / g, and the deintercalation reaction of lithium in graphite occurs at about ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/587H01M4/62H01M10/0525B82Y30/00
CPCB82Y30/00H01M4/366H01M4/587H01M4/626H01M10/0525Y02E60/10
Inventor 晏荦黄莘仰韻霖
Owner DONGGUAN KAIJIN NEW ENERGY TECH
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