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Electrode composite material for lithium ion capacitor, manufacturing method thereof and electrode manufacturing

A technology of composite materials and manufacturing methods, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of difficult mixing of active materials, time-consuming preparation of composite materials, poor stability, etc., to achieve time-saving preparation, Cost saving and good stability

Active Publication Date: 2020-04-14
锦州凯美能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an electrode composite material for lithium ion capacitors and its manufacturing method and electrode preparation, so as to solve the problems in the prior art that the preparation of composite materials is time-consuming, costly, and different types of active materials are not easy to mix uniformly and have poor stability.

Method used

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  • Electrode composite material for lithium ion capacitor, manufacturing method thereof and electrode manufacturing
  • Electrode composite material for lithium ion capacitor, manufacturing method thereof and electrode manufacturing

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Pretreatment of Composite Materials

[0039] Weigh 2g activated carbon, 85g111 type ternary nickel cobalt manganese oxide lithium (NCM111) and 2g1,4bis(2-N',N'-dimethylethylamine)-5,8-dihydroxyanthraquinonepropanesulfonate Acid ylide (EAPS), put into the mixing cup, then pour 100g of absolute ethanol into the mixing cup with activated carbon and EAPS, seal the mixing cup with plastic wrap and stir at high speed until uniform. The mixture was heated by a one-time microwave for 45 minutes at a heat treatment temperature of 160°C.

[0040] Electrode preparation

[0041] Weigh 200g deionized water and 30g absolute ethanol, mix well, add 1.5g carboxymethylcellulose (CMC), pretreated active material, 8gketjen carbon black and 2.0gSBR type binder in turn, disperse evenly, and make electrode.

Embodiment 2

[0043] Pretreatment of Composite Materials

[0044] Weigh 8g of activated carbon, 75g of 523-type ternary nickel cobalt manganese oxide (NCM523) and 8g of 1,4 bis(2-N',N'-dimethylethylamine)-5,8-dihydroxyanthraquinone butanesulfonate Acid ylide (EADS), put into the mixing cup, then pour 110g of absolute ethanol into the mixing cup containing the active substance, seal the mixing cup with plastic wrap and stir at high speed until uniform. The mixture is subjected to a one-time 180°C high-temperature vacuum treatment for 60 minutes, with a vacuum degree of 10 -2 Pa.

[0045] Electrode preparation

[0046] Weigh 220g deionized water and 35g absolute ethanol, mix well, add 1.5g carboxymethyl cellulose (CMC), pretreated active material, 6gketjen carbon black and 2.0gSBR class binder successively, disperse evenly, make electrode.

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Abstract

The invention provides a manufacturing method of an electrode composite material for a lithium ion capacitor and manufacturing of an electrode. The preparation method of the electrode composite material for the lithium ion capacitor comprises the following steps of dissolving 40-96% of lithium-containing metal oxide, 2-30% of a carbon active material and 2-30% of hydroxyanthraquinone quaternary ammonium salt into an alcohol substance, uniformly dispersing to obtain a precursor; and sintering the precursor at a high temperature to obtain the electrode composite material for the lithium ion capacitor. The hydroxyanthraquinone quaternary ammonium salt is introduced to serve as an intermediate medium, two different types of active materials can be better combined together, performance of the two materials is brought into play to the maximum extent, and meanwhile the hydroxyanthraquinone quaternary ammonium salt can play a role in improving a capacity. According to the composite material formed through the method, a requirement for an electrode manufacturing process is greatly lowered, the requirement for an electrode manufacturing environment is reduced, a process is simpler and more convenient, operation is easy, and the electrode can be manufactured in various modes.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to an electrode composite material for a lithium ion capacitor, a manufacturing method thereof, and an electrode preparation. Background technique [0002] For energy storage devices, it is a future development trend to have high energy, high power density and high cycle stability at the same time. Supercapacitors have high power density and high efficiency, but the energy density is not as good as other energy storage devices, such as lithium-ion batteries. How to better combine the two has become a research hotspot in recent years. Therefore, lithium-ion capacitors As a new type of energy storage device, it has attracted extensive attention. Lithium-ion capacitors combine capacitor active materials and battery active materials, that is, composite electrodes that contain both lithium-ion battery and supercapacitor composite materials. During the charge and discharge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/50H01G11/86
CPCH01G11/50H01G11/86Y02E60/13
Inventor 王颖常亮王奕斌刘璐周婷钟镇锴
Owner 锦州凯美能源有限公司
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