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Graphene material for storage battery and preparation method for graphene material

A graphene and battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor stability, complex operation, low quality and yield of graphene composites, and achieve good stability, simple process, raw materials and other problems. Inexpensive effect

Inactive Publication Date: 2017-04-26
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

[0013] This application aims at the technical problems of existing graphene composites such as low quality and yield, poor stability and complex operation, and provides a graphene material for storage battery and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 100 parts of xylene, 5 parts of graphite, 1 part of fluorosilicate, 2 parts of lithium manganate, 1.5 parts of sodium hydride, 20 parts of tetraethylammonium tetrafluoroborate, 6 parts of cesium nitrate, and 3 parts of acrylonitrile, 4 parts of butyrolactone, 0.3 parts of vermiculite, 5 parts of dimethylhydrazine, 0.5 parts of heptane, 15 parts of butanol, 20 parts of acrylic acid, and 10 parts of sodium hexametaphosphate.

[0029] Calcinate graphite and vermiculite at 500°C for 20min, then add the remaining raw materials at 60°C, and grind in a grinder for 40min to make them evenly mixed.

[0030] Put the uniformly mixed raw materials into a ceramic crucible with a cover after decompression and suction filtration, and then put the ceramic crucible with a cover into a tube furnace, firstly heat it to 550°C under the protection of high-purity nitrogen, and keep it warm for 6 hours , and then further heated to 750° C., and kept for 4 hours to react to prepare a grap...

Embodiment 2

[0033] Weigh 100 parts of xylene, 45 parts of graphite, 5 parts of fluorosilicate, 6 parts of lithium manganate, 5.5 parts of sodium hydride, 60 parts of tetraethylammonium tetrafluoroborate, 10 parts of cesium nitrate, and 7 parts of acrylonitrile, 8 parts of butyrolactone, 0.5 parts of vermiculite, 25 parts of dimethylhydrazine, 4.5 parts of heptane, 35 parts of butanol, 40 parts of acrylic acid, and 30 parts of sodium hexametaphosphate.

[0034] Calcinate graphite and vermiculite at 600°C for 40min, then add the remaining raw materials at 80°C, grind in a grinder for 60min to make them evenly mixed.

[0035] Put the uniformly mixed raw materials into a ceramic crucible with a cover after decompression and suction filtration, and then put the ceramic crucible with a cover into a tube furnace, firstly heat it to 650°C under the protection of high-purity nitrogen, and keep it warm for 8 hours , and then further heated to 850° C., and kept for 6 hours to react to prepare a graphe...

Embodiment 3

[0038] Weigh 100 parts of xylene, 15 parts of graphite, 2 parts of fluorosilicate, 3 parts of lithium manganate, 2.5 parts of sodium hydride, 30 parts of tetraethylammonium tetrafluoroborate, 7 parts of cesium nitrate, and 4 parts of acrylonitrile, 5 parts of butyrolactone, 0.35 parts of vermiculite, 10 parts of dimethylhydrazine, 1.5 parts of heptane, 20 parts of butanol, 25 parts of acrylic acid, and 15 parts of sodium hexametaphosphate.

[0039] Calcinate graphite and vermiculite at 500°C for 20min, then add the remaining raw materials at 60°C, and grind in a grinder for 40min to make them evenly mixed.

[0040] Put the uniformly mixed raw materials into a ceramic crucible with a cover after decompression and suction filtration, and then put the ceramic crucible with a cover into a tube furnace, firstly heat it to 550°C under the protection of high-purity nitrogen, and keep it warm for 6 hours , and then further heated to 750° C., and kept for 4 hours to react to prepare a ...

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Abstract

The invention discloses a graphene material for a storage battery and a preparation method for the graphene material. The graphene material is prepared from the raw materials of xylene, graphite, fluosilicic acid, lithium manganate, sodium hydride, tetrafluoroboric acid tetraethylammonium, cesium nitrate, polyacrylonitrile, butyrolactone, vermiculite, dimethylhydrazine, heptane, butanol, crylic acid, and sodium hexametaphosphate; in 0.1M KOH solution, the electrocatalytic oxygen reduction limiting current density reaches 5.5-6.5mA / cm<2>; the initial potential reaches minus 0.05V vs.SCE; the raw materials are low in price, the operation is simple and easy to implement, and the stability is high; the capacity reaches 650-750mAh after 350-450 cycles; the manufactured storage battery can be fully charged within 6-10min, so that high conductivity is achieved; the process is simple, large-scale instrument equipment is not required, the yield is high, and large-scale production of the high-quality graphene material can be realized; and in addition, the graphene material can be widely produced and can replace the existing materials constantly.

Description

technical field [0001] The application belongs to the field of preparation of graphene materials, in particular to a graphene material for storage battery and a preparation method thereof. Background technique [0002] The microscopic structure of graphene is a network structure composed of carbon atoms. Because of the extreme thinness (only one layer of atoms thick), the movement of cations is very limited. At the same time, because of its network structure, the electrode material made of graphene also has sufficient pores. From a microscopic point of view, the charging and discharging process of the battery is actually a process of "embedding" and "detaching" cations in the electrodes. So, the more holes there are in the electrode material, the faster the process will go. From a macro point of view, it shows that the faster the charging and discharging speed of the battery is. . [0003] The most potential application of graphene at present is to become a substitute...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/587H01M4/62
CPCH01M4/362H01M4/587H01M4/62Y02E60/10
Inventor 王维根
Owner 江苏悠谷未来科技有限公司
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