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Graphene material for lithium battery and preparation method thereof

A graphene and lithium battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of complex preparation process, low yield, poor stability, etc., and achieve the effect of simple process, excellent thermal conductivity and good stability

Inactive Publication Date: 2017-05-31
江苏悠谷未来科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] This application aims at the technical problems of low yield, complex preparation process and poor stability of existing graphene materials, and provides a graphene material for lithium batteries and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 100 parts of potassium hydroxide, 35 parts of activated carbon, 4 parts of nickel-cobalt lithium manganate, 20 parts of graphene oxide, 1 part of sodium hydroxide, 4 parts of sodium borohydride, 24 parts of lithium nitrate, and three parts by weight. 3 parts of ethylene tetramine, 6 parts of N,N-diethylhydroxylamine, 5 parts of N,N-diethylethanolamine, 15 parts of ethanol, 10 parts of ethylene glycol, 5 parts of formamide, and 2 parts of ammonium nitrate.

[0026] Put activated carbon and graphene oxide into a reaction kettle with a stirrer and a thermometer, raise the temperature to 300°C, stir for 40 minutes, add the remaining raw materials, depressurize, filter with suction, wash with ethanol for 3 times, and put it into an oven at 75°C for drying After drying for 20 minutes, put it into a grinder and grind for 50 minutes, and pass through a 200-mesh sieve.

[0027] Put the ground raw material in a ceramic crucible with a cover, then put the ceramic crucible wi...

Embodiment 2

[0030] Weigh 100 parts of potassium hydroxide, 55 parts of activated carbon, 8 parts of nickel-cobalt lithium manganate, 40 parts of graphene oxide, 5 parts of sodium hydroxide, 8 parts of sodium borohydride, 28 parts of lithium nitrate, and three parts by weight. 7 parts of ethylene tetramine, 10 parts of N,N-diethylhydroxylamine, 9 parts of N,N-diethylethanolamine, 35 parts of ethanol, 30 parts of ethylene glycol, 25 parts of formamide, and 6 parts of ammonium nitrate.

[0031] Put activated carbon and graphene oxide into a reaction kettle with a stirrer and a thermometer, raise the temperature to 500°C, stir for 60 minutes, add the remaining raw materials, depressurize, filter with suction, wash with ethanol for 5 times, and then put it into a 95°C oven for drying After drying for 40 minutes, put it into a grinder and grind for 60 minutes, and pass through a 200-mesh sieve.

[0032]Put the ground raw material in a ceramic crucible with a cover, then put the ceramic crucible...

Embodiment 3

[0035] Weigh 100 parts of potassium hydroxide, 40 parts of activated carbon, 5 parts of nickel-cobalt lithium manganate, 25 parts of graphene oxide, 2 parts of sodium hydroxide, 5 parts of sodium borohydride, 25 parts of lithium nitrate, and three parts by weight. 4 parts of ethylene tetramine, 7 parts of N,N-diethylhydroxylamine, 6 parts of N,N-diethylethanolamine, 20 parts of ethanol, 15 parts of ethylene glycol, 10 parts of formamide, and 3 parts of ammonium nitrate.

[0036] Put activated carbon and graphene oxide into a reaction kettle with a stirrer and a thermometer, raise the temperature to 300°C, stir for 40 minutes, add the remaining raw materials, depressurize, filter with suction, wash with ethanol for 3 times, and put it into an oven at 75°C for drying After drying for 20 minutes, put it into a grinder and grind for 50 minutes, and pass through a 200-mesh sieve.

[0037] Put the ground raw material in a ceramic crucible with a cover, then put the ceramic crucible ...

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PUM

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Abstract

The invention discloses a graphene material for a lithium battery and a preparation method thereof. The graphene material for the lithium battery contains raw materials of potassium hydroxide, active carbon, Ni-Co lithium manganate, graphene oxide, sodium hydroxide, sodium borohydride, lithium nitrate, triethylene tetramine, N, N-diethylhydroxylamine and N, N-diethyl ethylene diamine. The graphene material for the lithium battery, disclosed by the invention, has the advantages that the mechanical property is excellent, the internal resistance of the battery is reduced, the service life of the battery is prolonged, the heat-conducting property is excellent, the raw materials are cheap, the operation is simple, the electrical conductivity is excellent, the battery is rapidly and fully charged within 5-9 minutes, large-current discharging performance and low temperature performance of the battery are improved, the stability of the battery is good, the battery can be charged and discharged for 400-500 times in circulation, the battery capacity reaches 700-900 mAh, the process is simple and easy to operate, the product quality and the product yield are stable and easy to control, and the graphene material can be widely produced and continuously replace the existing materials.

Description

technical field [0001] The application belongs to the field of preparation of graphene materials, in particular to a graphene material for lithium batteries and a preparation method thereof. Background technique [0002] With the gradual breakthrough of batch production and large-scale problems, the pace of industrial application of graphene is accelerating. Based on the existing research results, the first fields of commercial application may be mobile devices, aerospace, new Energy battery field. [0003] Before the discovery of graphene, most physicists believed that thermodynamic fluctuations did not allow any two-dimensional crystals to exist at a finite temperature. Therefore, its discovery immediately shocked the academic community of condensate physics. Although both theoretical and experimental circles believe that a perfect two-dimensional structure cannot exist stably at non-absolute zero temperatures, single-layer graphene has been prepared in experiments. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62C04B35/52C04B35/622
CPCC04B35/52C04B35/622C04B2235/3201C04B2235/425C04B2235/44C04B2235/443C04B2235/96H01M4/62H01M4/625Y02E60/10
Inventor 王维根
Owner 江苏悠谷未来科技有限公司
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