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A kind of magnetic conductive graphene battery material and preparation method thereof

A battery material, graphene technology, applied in the direction of battery electrodes, secondary batteries, inorganic material magnetism, etc., can solve problems such as thermodynamic instability, achieve excellent electrical properties, high magnetic saturation value effect

Active Publication Date: 2019-11-12
SHENZHEN XINHENGKUN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, graphene oxide is insulating and thermodynamically unstable. After being added to the composite material, it is generally converted into graphene again through reduction. It is difficult to avoid adverse effects on the material during the reduction of graphene oxide into graphene.

Method used

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  • A kind of magnetic conductive graphene battery material and preparation method thereof

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Effect test

Embodiment 1

[0033] A preparation method of a magnetically conductive graphene battery material, comprising the following steps:

[0034] (1) adding ferric salt with a particle size of 20nm and heat-treated liquid polyacrylonitrile into the solvent, stirring and mixing to obtain liquid polyacrylonitrile-coated iron particles;

[0035] (2) Dry at 200°C for 5 hours until the solvent is completely evaporated to obtain low-temperature carbonized precursor-coated iron particles;

[0036] (3) under the protection of an inert atmosphere, calcining at 1000° C. for 5 hours to obtain graphene coated with nano-iron particles;

[0037] (4) adding nickel salt with a particle size of 20nm, polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, sodium phytate, sodium thimerosal and coated nano-iron particles to the volume In the ethylene glycol solution with a concentration of 30%, after ultrasonic dispersion, transfer to a hydrothermal high-pressure reactor, and react at 200 ° C ...

Embodiment 2

[0044] A preparation method of a magnetically conductive graphene battery material, comprising the following steps:

[0045] (1) adding ferric salt with a particle diameter of 30nm and heat-treated liquid polyacrylonitrile into the solvent, stirring and mixing to obtain liquid polyacrylonitrile-coated iron particles;

[0046] (2) Dry at 250°C for 8 hours until the solvent is completely evaporated to obtain low-temperature carbonized precursor-coated iron particles;

[0047] (3) under the protection of an inert atmosphere, calcining at 1200° C. for 8 hours to obtain graphene coated with nano-iron particles;

[0048] (4) adding nickel salt with a particle size of 30nm, polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, sodium phytate, sodium thimerosal and coated nano-iron particles into the volume In the ethylene glycol solution with a concentration of 40%, after ultrasonic dispersion, transfer to a hydrothermal high-pressure reactor, and react at 220°...

Embodiment 3

[0055] A preparation method of a magnetically conductive graphene battery material, comprising the following steps:

[0056] (1) adding ferric salt with a particle diameter of 25nm and heat-treated liquid polyacrylonitrile into the solvent, stirring and mixing to obtain liquid polyacrylonitrile-coated iron particles;

[0057] (2) Dry at 220°C for 6 hours until the solvent is completely evaporated to obtain low-temperature carbonized precursor-coated iron particles;

[0058] (3) Under the protection of an inert atmosphere, calcining at 1100° C. for 7 hours to obtain graphene coated with nano-iron particles;

[0059] (4) adding nickel salt with a particle diameter of 25nm, polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, sodium phytate, sodium thimerosal and coated nano-iron particles into the volume In the ethylene glycol solution with a concentration of 35%, after ultrasonic dispersion, transfer to a hydrothermal high-pressure reactor, and react a...

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Abstract

The invention provides a magnetically conductive graphene battery material and a preparation method thereof. The preparation method comprises the following steps: coating iron particles with liquid polyacrylonitrile; drying the coated iron particles at low temperature to obtain low-temperature carbonization precursor coated iron particles; calcining the low-temperature carbonization precursor coated iron particles at high temperature to obtain graphene coated with iron nanoparticles; dispersing the graphene, nickel salt, a polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, sodium phytate and sodium merthiolate into ethylene glycol solution and then transferring the mixed solution into a hydrothermal high pressure reaction kettle for performing a hydrothermal reaction, so that nano-nickel oxide is loaded on the surface of the graphene coated with the magnetic iron nanoparticles; processing the graphene after cooling, so as to obtain the magnetically conductivegraphene battery material. In the magnetically conductive graphene battery material obtained by the invention, the graphene is used as a basic structure; the graphene is internally loaded with the iron nanoparticles and is externally loaded with the nano-nickel oxide, so that the magnetic saturation value is high, and the magnetically conductive graphene battery material has an excellent electrical property.

Description

technical field [0001] The invention relates to the technical field of battery materials, in particular to a magnetically conductive graphene battery material and a preparation method thereof. Background technique [0002] With economic development and social progress, the demand for energy is increasing. Fossil energy such as coal, oil, and natural gas can no longer satisfy the development of human society. Moreover, fossil energy is a non-renewable energy. The depletion of fossil energy is irreversible and is also An unavoidable challenge for future development. At the same time, fossil energy is also a major culprit of environmental pollution. Therefore, finding new renewable clean energy has become a top priority. At present, there are many researches on replacing traditional fossil energy with chemical power sources, which can effectively alleviate energy problems and environmental pollution problems. Among them, the development of secondary power sources has effective...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/525H01M4/587H01M10/0525H01F1/01H01F41/00B82Y30/00
CPCY02E60/10
Inventor 不公告发明人
Owner SHENZHEN XINHENGKUN TECH
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