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Electrode material and preparation method and application thereof

A technology of organic electrodes and organic negative electrodes, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as poor cycle stability and low specific capacity

Active Publication Date: 2017-05-10
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned materials still have the problems of low specific capacity and poor cycle stability. In order to meet the development needs of lithium / sodium ion batteries with high specific energy and long life, a new type of battery with high specific capacity, good cycle stability, and easy to obtain is developed. Lithium / sodium ion battery organic negative electrode material is an important way and demand for the development and industrialization of ion batteries

Method used

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  • Electrode material and preparation method and application thereof
  • Electrode material and preparation method and application thereof
  • Electrode material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] C 6 h 6 o 9 S 2 Preparation of:

[0062] Weigh 60 mmol of 1,2,3-trihydroxybenzene, pour it into a reaction flask, and add 200 mL of concentrated sulfuric acid to obtain a white solid. Stir at room temperature for 48h to fully react. filtered and dried to obtain C 6 h 6 o 9 S 2 White powder.

[0063] C 6 h 6 o 9 S 2 Preparation of negative electrode sheet:

[0064] with C 6 h 6 o 9 S 2 As an organic anode material, weigh 120 mg of C 6 h 6 o 9 S 2Put the powder into an agate mortar, grind for 5 minutes, weigh 60 mg of conductive additive such as acetylene black, put it into the agate mortar, continue grinding for 5 minutes, and then add 5 mL of N-methylpyrrolidone solution dissolved with PVDF binder (solution concentration 15mg / mL), continue to grind for 40min, and then apply on copper foil to prepare C 6 h 6 o 9 S 2 Negative plate.

[0065] Assembly of Li-ion half-cells:

[0066] will prepare C 6 h 6 o 9 S 2 Negative electrodes were assemb...

Embodiment 2

[0078] C 6 h 4 o 9 S 2 Li 2 Preparation of:

[0079] Weigh the synthetic C of 10mmol embodiment one 6 h 6 o 9 S 2 , add 5mL of distilled water, stir at room temperature for 2min to dissolve, continue to add 20mL of saturated lithium chloride solution, stir for 5min, a white solid appears, continue to stir for 12h, make it react fully, filter, dry, and obtain C 6 h 4 o 9 S 2 Li 2 .

[0080] C 6 h 4 o 9 S 2 Li 2 Preparation of negative electrode sheet:

[0081] with C 6 h 4 o 9 S 2 Li 2 As an organic anode material, weigh 120 mg of C 6 h 4 o 9 S 2 Li 2 Put the powder into an agate mortar, grind for 5 minutes, weigh 60 mg of conductive additive such as acetylene black, put it into the agate mortar, continue grinding for 5 minutes, and then add 5 mL of N-methylpyrrolidone solution dissolved with PVDF binder (solution concentration 15mg / mL), continue to grind for 40min, and then apply on copper foil to prepare C 6 h 4 o 9 S 2 Li 2 Negative plate. ...

Embodiment 3

[0089] C6 h 4 o 9 S 2 Na 2 Preparation of:

[0090] Weigh the synthetic C of 10mmol embodiment one 6 h 6 o 9 S 2 , add 5mL of distilled water, stir at room temperature for 2min to dissolve, continue to add 20mL of saturated sodium chloride solution, stir for 5min, a white solid appears, continue to stir for 12h, make it react fully, filter, dry, and obtain C 6 h 4 o 9 S 2 Na 2 .

[0091] C 6 h 4 o 9 S 2 Na 2 Preparation of negative electrode sheet:

[0092] with C 6 h 4 o 9 S 2 Na 2 As an organic anode material, weigh 120 mg of C 6 h 4 o 9 S 2 Na 2 Put the powder into an agate mortar, grind for 5 minutes, weigh 60 mg of conductive additive such as acetylene black, put it into the agate mortar, continue grinding for 5 minutes, and then add 5 mL of N-methylpyrrolidone solution dissolved with PVDF binder (solution concentration was 15mg / mL), continued to grind for 40 minutes, and then coated on copper foil to prepare C 6 h 4 o 9 S 2 Na 2 Negative ...

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Abstract

The invention discloses an organic electrode material and a preparation method and application thereof. The organic electrode material comprises any one or a mixture of at least two of a hydroxy-benzenesulfonic acid, hydroxybenzene sulfonate, a benzenesulfonic acid, benzene sulfonate, a benzene disulfonic acid or benzene disulfonate. The invention further provides an organic electrode and a preparation method thereof. The organic electrode comprises the following raw material components: an active substance, a conductive additive and a binder. The organic electrode material is available in raw material, simple in synthesis method and low in cost; the lithium-ion battery and a sodium-ion battery prepared from the organic electrode material have excellent electrochemical properties, high specific capacity and good stability and rate capability; according to the obtained lithium battery, the initial discharge capacity can reach 2272mAh g<-1>, the two-circle coulomb efficiency can reach 97% and the coulomb efficiency of circulating 100 cycles can reach 100%; and the organic electrode material has a wide application prospect in the lithium-ion / sodium-ion battery.

Description

technical field [0001] The invention belongs to the technical field of secondary batteries and energy materials, and relates to an electrode material, its preparation method and application, in particular to an organic electrode material containing hydroxybenzenesulfonic acid and / or hydroxybenzenesulfonate, its preparation method and The electrode material is used in an ion battery. Background technique [0002] Since the 21st century, the energy problem has become the main problem restricting the economic development of various countries. Traditional fossil energy such as coal, oil and natural gas is the main energy supporting social development at present. However, the reserve problem of fossil energy is becoming more and more prominent, and it also brings serious environmental pollution. Therefore, the development of clean and renewable energy has become the key to the sustainable development of human society. In the current energy storage system, the chemical energy s...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/60H01M10/0525H01M10/054
CPCH01M4/364H01M4/60H01M10/0525H01M10/054Y02E60/10
Inventor 党宁李泯婵卢周广陆为
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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