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A kind of preparation method of porous carbon sphere loaded mxoy nanoparticle composite material

A nanoparticle and composite material technology, applied in the field of materials, can solve the problems of limited development and application, unstable cycle performance, capacity decline, etc., and achieve broad development prospects and application space, stable product morphology, and uniform heating effects.

Inactive Publication Date: 2017-01-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, manganese, iron, cobalt oxides (such as Mn 3 o 4 , Fe 3 o 4 , CoO) as lithium-ion battery anode materials have high theoretical specific capacity, abundant reserves, and no pollution to the environment. However, due to the easy aggregation of nanoparticles, the capacity drops sharply during the charging and discharging process of the battery, and the cycle performance is unstable. thus limiting its further development and application

Method used

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  • A kind of preparation method of porous carbon sphere loaded mxoy nanoparticle composite material
  • A kind of preparation method of porous carbon sphere loaded mxoy nanoparticle composite material
  • A kind of preparation method of porous carbon sphere loaded mxoy nanoparticle composite material

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Embodiment 1

[0039] 1) Preparation of porous carbon spheres by high temperature spray pyrolysis

[0040] In the first step, weigh 11.6g of sodium chloroacetate and dissolve it in 100mL of deionized water, add it into a humidifier to generate mist;

[0041] The second step is to continuously feed 1.0L / min argon into the humidifier, and introduce the mist into the quartz tube of the tube furnace working at 600°C;

[0042] The third step is to use absolute ethanol to collect the gas discharged from the quartz tube;

[0043] In the fourth step, the product was centrifuged at 5000 rpm to collect the precipitate, and dried in a vacuum oven at 60°C for 10 hours, and the obtained product was porous carbon spheres.

[0044] 2) Porous carbon spheres loaded with Mn 3 o 4 Synthesis of nanoparticle composites

[0045] In the first step, after weighing 25mg of porous carbon spheres and dispersing them in 50mL of triethylene glycol, transfer them into a 100mL three-necked flask, stir them mechanicall...

Embodiment 2

[0050] 1) Preparation of porous carbon spheres by high temperature spray pyrolysis

[0051] In the first step, weigh 11.6g of sodium chloroacetate and dissolve it in 100mL of deionized water, add it into a humidifier to generate mist;

[0052]The second step is to continuously feed 1.0L / min argon into the humidifier, and introduce the mist into the quartz tube of the tube furnace working at 700°C;

[0053] The third step is to use absolute ethanol to collect the gas discharged from the quartz tube;

[0054] In the fourth step, the product was centrifuged at 5000 rpm to collect the precipitate, and dried in a vacuum oven at 60°C for 10 hours, and the obtained product was porous carbon spheres.

[0055] 2) Porous carbon spheres loaded Fe 3 o 4 Synthesis of nanoparticle composites

[0056] In the first step, after weighing 30mg of porous carbon spheres and dispersing them in 50mL of triethylene glycol, transfer them into a 100mL three-necked flask, stir them mechanically and ...

Embodiment 3

[0061] 1) Preparation of porous carbon spheres by high temperature spray pyrolysis

[0062] In the first step, weigh 25mg of porous carbon spheres and disperse them in 50mL of triethylene glycol, transfer them to a 100mL three-necked flask, and add them to a humidifier to generate mist;

[0063] The second step is to continuously feed 1.5L / min argon into the humidifier, and introduce the mist into the quartz tube of the tube furnace working at 700°C;

[0064] The third step is to use absolute ethanol to collect the gas discharged from the quartz tube;

[0065] In the fourth step, the product was centrifuged at 5000 rpm to collect the precipitate, and dried in a vacuum oven at 60°C for 10 hours, and the obtained product was porous carbon spheres.

[0066] 2) Synthesis of porous carbon sphere-supported CoO nanoparticles composites

[0067] In the first step, measure 50mL of triethylene glycol into a 100mL three-necked flask, mechanically stir the bar and heat to 250°C;

[006...

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Abstract

The invention relates to a preparation method of a porous carbon ball-supported MxOy nanoparticle composite material. The preparation method comprises the following steps of weighing porous carbon balls, adding the porous carbon balls into a solvent, carrying out ultrasonic dispersion, carrying out heating for a reaction, adding a proper amount of acetylacetone salt into the reaction product at a required temperature, carrying out a high-temperature backflow reaction process, then carrying out centrifugation and washing, and collecting the product which is the porous carbon ball-supported MxOy nanoparticle composite material, wherein M represents Mn, Fe or Co. The preparation method has simple processes and general preparation conditions. The porous carbon ball-supported MxOy nanoparticle composite material has stable product morphology and high purity and can be treated conveniently and simply. The preparation method is suitable for middle-scale industrial production.

Description

technical field [0001] The invention belongs to the field of material technology, in particular to a porous carbon sphere loaded M x o y Preparation method of (M=Mn, Fe, Co) nanoparticle composites. Background technique [0002] As an effective sustainable energy storage system, lithium-ion battery has the advantages of small size, light weight, large capacity, high voltage, safety, and no pollution. It has become an internationally recognized ideal chemical energy source and has been widely used in mobile phones, Among electronic products such as notebook computers, electric tools, and mobile communication tools, it is expected to achieve large-scale applications in the fields of electric vehicles, aerospace, military mobile communication tools and equipment in the future. Among them, manganese, iron, cobalt oxides (such as Mn 3 o 4 , Fe 3 o 4 , CoO) as lithium-ion battery anode materials have high theoretical specific capacity, abundant reserves, and no pollution to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/52H01M4/50B82Y30/00
CPCB82Y30/00H01M4/364H01M4/50H01M4/52H01M10/0525Y02E60/10
Inventor 温鸣陈世培邢柯
Owner TONGJI UNIV
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