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A kind of preparation method of conductive polymer lithium ion energy storage device

A technology of conductive polymers and energy storage devices, applied in the field of energy storage devices, can solve the problems of lack of energy storage devices, etc., and achieve the effect of small particles, high charge and discharge voltage platform, and large specific surface area

Active Publication Date: 2019-10-15
中国东方电气集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both energy storage devices have their own application occasions. At present, there is a lack of energy storage devices between the two devices, which can meet the dual requirements of energy density and power density at the same time to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) According to the molar ratio of 1:4, lithium polyoxometalate Li 3 PMo 12 o 40 solution and aniline monomer solution;

[0038] (2) Add the prepared polyoxometalate lithium salt solution dropwise to the aniline monomer solution, stir while adding, react at room temperature for 16 hours, then wash the reacted solid matter with distilled water and alcohol, then wash the washed The substance is dried in a drying oven at 40-200° C. for 2-10 hours to prepare lithium polyoxometalate conductive polymer (or called polyaniline). The lithium polyoxometalate solution is added dropwise to the conductive polymer monomer solution, and normal temperature refers to 10-40°C.

[0039] b. Preparation of pole piece of energy storage device

[0040] The configuration ratio of the positive electrode slurry for the energy storage device is as follows:

[0041] Lithium polyoxometalate conductive polymer: LixNi3Co3Mn3: polyvinylidene fluoride: conductive carbon black according to the ra...

Embodiment 2

[0056] According to the molar ratio of 1:3, lithium polyoxometalate lithium phosphotungstate Li was prepared respectively 3 PW 12 o 40 solution and pyrrole monomer solution, the prepared lithium phosphotungstate Li 3 PW 12 o 40The solution is added dropwise to the pyrrole monomer solution to prepare lithium polyoxometalate conductive polymer (or polypyrrole).

[0057] The configuration ratio of the positive electrode slurry for the energy storage device is as follows:

[0058] Lithium polyoxometalate conductive polymer: LixNi3Co3Mn3: polyvinylidene fluoride: conductive carbon black = 22.5:25:1.5:1, configure slurry in NMP solvent according to this ratio, and coat the slurry on aluminum foil, After cold pressing, slicing and stacking, the positive electrode sheet of the energy storage device is obtained.

[0059] The configuration ratio of the negative electrode slurry of the energy storage device is as follows:

[0060] Polypyrrole: polyvinylidene fluoride: conductive c...

Embodiment 3

[0064] According to the molar ratio of 1:9, lithium polyoxometalate lithium phosphotungstate Li was prepared respectively 4 SiW 12 o 40 solution and pyrrole monomer solution, the prepared lithium phosphotungstate Li 4 SiW 12 o 40 The solution is added dropwise to the pyrrole monomer solution to prepare lithium polyoxometalate conductive polymer (or polypyrrole).

[0065] The configuration ratio of the positive electrode slurry for the energy storage device is as follows:

[0066] Lithium polyoxometalate conductive polymer: LixNi3Co3Mn3 (ternary positive electrode material): polyvinylidene fluoride: conductive carbon black is configured into a slurry in NMP (N-methylpyrrolidone) solvent at a ratio of 22.5:25:1.5:1, And the slurry is coated on the aluminum foil, and then cold pressed, sliced ​​and stacked to prepare the positive electrode sheet of the energy storage device.

[0067] The configuration ratio of the negative electrode slurry of the energy storage device is as...

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Abstract

The invention discloses a preparation method of a conductive polymer lithium ion energy storage device. The prepared lithium polyoxometalate salt solution is added to a conductive polymer monomer solution to prepare a lithium polyoxometalate conductive polymer; Lithium acid conductive polymer, ternary positive electrode material, polyvinylidene fluoride and conductive carbon black are configured into slurry in N-methylpyrrolidone solvent in a certain proportion, and the slurry is coated on aluminum foil and copper foil to obtain The positive pole piece and the negative pole piece of the energy storage device; the prepared pole pieces are packaged in aluminum and plastic, and the electrolyte prepared in step c is injected into the energy storage device. The lithium-ion energy storage device prepared by this method not only makes up for the defect of low energy density of traditional supercapacitors, but also improves the power density of traditional lithium-ion batteries to a certain extent, and becomes an energy storage device between traditional supercapacitors and traditional lithium-ion batteries. Energy storage device between batteries.

Description

technical field [0001] The invention relates to the technical field of energy storage devices, in particular to a preparation method of a conductive polymer lithium ion energy storage device. Background technique [0002] Lithium-ion batteries, as an electrochemical energy storage element, have the advantages of high energy density and environmental protection; supercapacitors, also as an electrochemical energy storage element, have long life (up to 100,000 times or more), high power density Large and other advantages are used to make up for the lack of power performance of lithium-ion batteries. Both types of energy storage devices have their own application occasions. At present, there is a lack of energy storage devices between the two types of devices, which can meet the dual requirements of energy density and power density to a certain extent at the same time. Contents of the invention [0003] In order to overcome the defects of the prior art, the present invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/1399H01M4/36H01M4/505H01M4/525H01M4/60H01M4/62H01M10/0525H01M10/0563H01M10/058
CPCH01M4/1399H01M4/364H01M4/505H01M4/525H01M4/602H01M4/625H01M10/0525H01M10/0563H01M10/058Y02E60/10Y02P70/50
Inventor 廖小东王瑨谢皎
Owner 中国东方电气集团有限公司
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