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A graphene high-energy battery

A graphene and graphene-wrapped technology, applied in battery electrodes, lithium storage batteries, secondary batteries, etc., can solve the problems of high production cost and complex production equipment, and achieve the effects of low production cost, simple assembly, and high safety performance.

Active Publication Date: 2019-12-31
深圳市荣利伟业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem in the research and development of graphene batteries is to realize industrial production and solve the problems of complex production equipment and high production costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A graphene high-energy battery comprising graphene-wrapped Li 0.89 Ti 0.11 FePO 4 The positive electrode of the battery, Li 11 Si 2 P.S. 12 A solid electrolyte membrane made of materials and a negative electrode of a battery made of a graphene-wrapped silicon-based material, the solid electrolyte membrane is arranged between the positive electrode of the battery and the negative electrode of the battery, and the side of the positive electrode of the battery and the negative electrode of the battery against the solid electrolyte membrane is polished .

[0022] The preparation method of the solid electrolyte membrane is as follows: Li 2 S particles, SiS 2 Particles and P 2 S 5 Put the particles into the ball mill and mill at a speed of 600r / min for 12 hours. The balls used for ball milling are zirconia balls, and the ball-to-material ratio is 40:1. After the ball milling, a mixture is obtained, which is mixed with molten polyphenylene ether and pressed into a shee...

Embodiment 2

[0025] A graphene high-energy battery comprising graphene-wrapped Li 0.89 Ti 0.11 FePO 4 The positive electrode of the battery, Li 11 Si 2 P.S. 12 A solid electrolyte membrane made of materials and a negative electrode of a battery made of a graphene-wrapped silicon-based material, the solid electrolyte membrane is arranged between the positive electrode of the battery and the negative electrode of the battery, and the side of the positive electrode of the battery and the negative electrode of the battery against the solid electrolyte membrane is polished .

[0026] The preparation method of the solid electrolyte membrane is as follows: Li 2 S particles, SiS 2 Particles and P 2 S 5 Put the particles into the ball mill and mill at a speed of 500r / min for 20 hours. The balls used for ball milling are zirconia balls with a ball-to-material ratio of 35:1. After the ball milling, a mixture is obtained, which is mixed with molten polyphenylene ether and pressed into a sheet ...

Embodiment 3

[0029] A graphene high-energy battery comprising graphene-wrapped Li 0.89 Ti 0.11 FePO 4 The positive electrode of the battery, Li 11 Si 2 P.S. 12 A solid electrolyte membrane made of materials and a negative electrode of a battery made of a graphene-wrapped silicon-based material, the solid electrolyte membrane is arranged between the positive electrode of the battery and the negative electrode of the battery, and the side of the positive electrode of the battery and the negative electrode of the battery against the solid electrolyte membrane is polished .

[0030] The preparation method of the solid electrolyte membrane is as follows: Li 2 S particles, SiS 2 Particles and P 2 S 5 Put the particles into the ball mill and mill at a speed of 550r / min for 18 hours. The balls used for ball milling are zirconia balls, and the ball-to-material ratio is 30:1. After the ball milling, a mixture is obtained, which is mixed with molten polyphenylene ether and pressed into a shee...

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Abstract

The invention discloses a high energy graphene battery which comprises a battery anode prepared from graphene wrapped Li0.89Ti0.11FePO4, a solid electrolyte membrane prepared from a Li11Si2PS12 material and a battery cathode prepared from a graphene wrapped silica-based material; the solid electrolyte membrane is arranged between the battery anode and the battery cathode, and the Li11Si2PS12 solid electrolyte membrane is prepared by taking Li2S particles, SiS2 particles and P2S5 particles at a mole mass ratio of 11:4:1 as raw materials, performing grinding and mixing by a high energy ball milling method, preparing sheets by taking molten polyphenyl ether, and performing roll squeezing, hot press molding and chloroform soaking. The prepared graphene battery has the advantages of safety, stability, and high weight energy density, the high pressure is not required in a preparation process, and the preparation cost is low.

Description

technical field [0001] The invention relates to a graphene high-energy battery. Background technique [0002] In a narrow sense, graphene refers to single-layer graphite with a thickness of 0.335nm and only one layer of carbon atoms, but in fact, graphite structures within 10 layers can also be called graphene. Those with more than 10 layers are called graphite films. Each carbon atom of graphene is sp2 hybridization, and contributes to the remaining one hybridization, and contributes the remaining one p orbital electron to form a double bond, and the two electrons can move freely, giving graphene excellent conductivity. Pure graphene materials cannot be used as electrodes due to their low first-cycle Coulombic efficiency, high charge-discharge platform, and poor cycle performance stability. [0003] Graphene battery is a new energy battery developed by utilizing the characteristics of rapid and large-scale shuttle movement of lithium ions between the graphene surface and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M10/0562H01M4/48H01M10/052
CPCH01M4/366H01M4/48H01M4/5825H01M4/625H01M4/626H01M10/052H01M10/0562Y02E60/10
Inventor 不公告发明人
Owner 深圳市荣利伟业科技有限公司
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