Method for preparing lithium ion carbon negative electrode material from mixed mushroom residue waste

A technology of carbon negative material and mixed bacteria, which is applied in the field of lithium-ion batteries to achieve the effects of increasing reversible specific capacity, improving comprehensive electrochemical performance, and high economic and social benefits

Active Publication Date: 2018-02-23
大理宸宇储能新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there are few reports on the preparation of lithium-ion carbon anode materials from mixed bacterial residue waste as raw materials.

Method used

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  • Method for preparing lithium ion carbon negative electrode material from mixed mushroom residue waste
  • Method for preparing lithium ion carbon negative electrode material from mixed mushroom residue waste

Examples

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Effect test

Embodiment 1

[0044] 1) Mix oxytetracycline slag and Penicillium slag powder at a mass ratio of 1:1, bake in a vacuum oven at 100°C for 24 hours, remove moisture, and then ball mill the obtained dried slag waste for 6 hours, Obtain a fungus residue powder with an average particle size of about 25 μm;

[0045] (2) Take a certain amount of mixed bacteria residue of oxytetracycline and penicillin obtained in step (1) and nickel chloride and sodium hydroxide are mixed in aqueous solution according to the ratio of mass ratio 29:5:15, and at 80 DEG C Continue to stir until the water is evaporated to dryness to obtain a uniform mixture of nickel chloride, nickel hydroxide, sodium hydroxide and bacterium residue;

[0046] (3) the homogeneous mixture of nickel chloride, nickel hydroxide, sodium hydroxide and mixed bacterium slag that step (2) obtains is under nitrogen atmosphere, with the air velocity of 1L / min, the rate of temperature rise of 5 ℃ / min rises to 1000°C high temperature, heat preserva...

Embodiment 2

[0051] 1) Mix oxytetracycline slag and cephalosporin slag at a mass ratio of 1:1, place in a vacuum oven at 100°C and bake for 24 hours to remove moisture, and then ball mill the obtained dried slag waste for 6 hours to obtain Mushroom residue powder with an average particle size of about 25 μm;

[0052] (2) Take a certain amount of mixed bacteria residue obtained in step (1), mix it with nickel chloride and sodium hydroxide in an aqueous solution at a mass ratio of 29:5:15, and keep stirring at 80°C until the water evaporates to dryness , obtain the homogeneous mixture of nickel chloride, nickel hydroxide, sodium hydroxide and bacterium residue;

[0053] (3) The homogeneous mixture of nickel chloride, nickel hydroxide, sodium hydroxide and bacterium slag that step (2) obtains is under nitrogen atmosphere, with the air velocity of 1L / min, the rate of temperature rise of 5 ℃ / min rises to 1000 ℃ high temperature, heat preservation for 2 hours, to obtain a mixture containing nic...

Embodiment 3

[0058] 1) Mix cephalosporin residues and penicillin residues at a mass ratio of 1:1, bake in a vacuum oven at 100°C for 24 hours to remove moisture, and then ball mill the obtained dried residues for 6 hours. Obtain the fungus residue powder with an average particle size of about 20 μm;

[0059] (2) Take a certain amount of oxytetracycline slag obtained in step (1), mix it with nickel chloride and sodium hydroxide in an aqueous solution at a mass ratio of 12:2:7, and keep stirring at 80°C until the water content Evaporate to dryness to obtain a homogeneous mixture of nickel chloride, nickel hydroxide, sodium hydroxide and bacterium residue;

[0060] (3) The homogeneous mixture of nickel chloride, nickel hydroxide, sodium hydroxide and bacterium slag that step (2) obtains is under nitrogen atmosphere, with the air velocity of 1L / min, the rate of temperature rise of 5 ℃ / min rises to 1000 ℃ high temperature, heat preservation for 2 hours, to obtain a mixture containing nickel, s...

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Abstract

The invention relates to a method for preparing multi-element doped hierarchical porous carbon with mixed mushroom residue waste as a raw material and application of the multi-element doped hierarchical porous carbon in a lithium battery negative electrode material. The method includes the steps that after being dried and ball-milled, the mixed mushroom residue waste is mixed with metal salt and inorganic base, and high-temperature calcination treatment is conducted; then metal impurities are removed by using inorganic acid, and the multi-element doped hierarchical porous carbon is obtained. The hierarchical porous carbon prepared through the preparation method is doped with multiple elements, is rich in micropore, mesopore and macropore, and is especially suitable for being applied to a lithium ion negative electrode material. Raw materials are wide in source, the process is simple, operation is convenient, the cost is low, the obtained product is excellent in performance, and expanded production is easy.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to a method for preparing carbon negative electrode materials for lithium ion batteries by using mixed fungus residue waste as raw materials. Background technique [0002] As a green energy storage device, lithium-ion batteries have a series of advantages such as high energy density, high open circuit voltage, and environmental protection. They have been widely used in portable electronic devices, such as mobile phones, notebooks, and portable cameras. Graphite carbon materials are currently the main commercial negative electrode materials for lithium-ion batteries, but the theoretical specific capacity of graphite itself is only 372mAh g -1 , it is difficult to meet the demand for high energy density in the future. Studies have shown that the porosity and element doping of carbon materials can provide more active sites for lithium ions, thereby effectively improving the revers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/587H01M10/0525
CPCH01M4/364H01M4/587H01M10/0525Y02E60/10
Inventor 杨娟周向阳廖群超唐晶晶李晨蒋敏王倩
Owner 大理宸宇储能新材料有限公司
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