Flexible battery electrode and manufacturing process thereof

A flexible battery and electrode technology, used in battery electrodes, electrode manufacturing, active material electrodes, etc., can solve the problem of weak electrode connection, achieve long-term stable charge and discharge, excellent electrochemical performance, and achieve the effect of charge and discharge

Active Publication Date: 2021-03-26
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a flexible battery electrode and its manufacturing process for the long-term use of the flexible fibrous battery, which brings about the problem that the connection between the two electrodes is not firm. , can maintain good cycle stability under tensile conditions

Method used

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  • Flexible battery electrode and manufacturing process thereof
  • Flexible battery electrode and manufacturing process thereof
  • Flexible battery electrode and manufacturing process thereof

Examples

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preparation example Construction

[0048] combine Figure 1-Figure 3 , the present invention provides a method for preparing a flexible battery electrode, using an etching method to etch and prepare an irregular raised structure 100 on the surface of the positive electrode, including the following steps:

[0049] S1 Preparation of positive electrode

[0050] 1. The active material, conductive agent, and binder are made according to a certain formula, and then extruded and dried to form a positive electrode 1;

[0051] 2. Place it in acid solution or alkali solution for 10 seconds to 120 seconds according to the type and nature of the material;

[0052] 3. Rinse with distilled water several times;

[0053] 4. Then rinse with electrolyte solution for 1~3 times;

[0054] 5. Dry at 30℃~150℃ for 24 hours.

[0055] S2 preparation of negative electrode

[0056]1. Active materials, conductive agents, and binders are prepared according to a certain formula, then extruded and dried to form the negative electrode 2; ...

Embodiment 1

[0075] A preparation method of zinc-manganese flexible fibrous battery, comprising the following steps:

[0076] 1. Prepare the positive electrode material: the positive electrode uses manganese dioxide as the active material, graphene as the conductive agent, and polytetrafluoroethylene as the binder. The specific ratio is: manganese dioxide 30 wt%, graphene 20 wt%, polytetrafluoroethylene Vinyl fluoride 50 wt%. Taking 100mg of positive electrode material as an example, it contains 30mg of manganese dioxide, 20mg of graphene, and 50mg of polytetrafluoroethylene.

[0077] 2. Dry grinding: Add the above materials into the mortar and stir for 600s, and mix them evenly.

[0078] 3. Wet grinding: Add N-methylpyrrolidone solvent to the above-mentioned ground materials, add 2ml of N-methylpyrrolidone solvent per 100mg of powder, and stir until viscous.

[0079] 4. Extrusion: Inject the wet-milled material into the syringe and extrude it at a constant speed.

[0080] 5. Drying: Pl...

Embodiment 2

[0096] A preparation method for a lithium-ion flexible fibrous battery, comprising the following steps:

[0097] 1. Prepare the positive electrode material: the positive electrode uses lithium iron phosphate as the active material, carbon nanotubes as the conductive agent, and polytetrafluoroethylene as the binder. The ratio is: lithium iron phosphate 30%, carbon nanotubes 10wt%, polytetrafluoroethylene Vinyl fluoride 60 wt%. Taking 100mg of positive electrode material as an example, it contains 30mg of lithium iron phosphate, 10mg of carbon nanotubes, and 60mg of polytetrafluoroethylene.

[0098] 2. Dry grinding: Add the above materials into the mortar and stir for 600s, and mix them evenly.

[0099] 3. Wet grinding: Add N-methylpyrrolidone solvent to the above-mentioned ground materials, add 2.4ml N-methylpyrrolidone solvent per 100mg of powder, and stir until viscous.

[0100] 4. Extrusion: Inject the wet-milled material into the syringe and extrude it at a constant speed...

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Abstract

The invention belongs to the field of flexible batteries, and relates to a flexible battery electrode and a manufacturing process thereof. The surface of a first electrode of the electrode is providedwith an irregular convex structure, and the surface of a second electrode is provided with a layer of solid electrolyte; the convex structure on the first electrode and the solid electrolyte on the second electrode are embedded with each other and are fastened and combined with each other. According to the method, the two poles of the fibrous flexible battery can be tightly connected, it is ensured that the two poles of the fibrous flexible battery are tightly bonded all the time in the bending process of the flexible device, and the flexible battery prepared through the method has more excellent flexibility and electrochemical performance.

Description

technical field [0001] The invention belongs to the field of chemical batteries, in particular to a stable and efficient flexible battery. Background technique [0002] With the intensification of energy demand, the world has paid more and more attention to renewable energy, which has brought about the re-emergence of energy storage batteries. As a type of energy storage batteries, flexible batteries have extremely high energy density and are light in weight. It has a strong sense of use and has attracted people's attention. However, in the current flexible fibrous battery, in the process of folding and stretching, there are situations such as falling off, poor contact, and open circuit, which seriously affect its use. It is particularly urgent to find a method that can work normally under time, arbitrary folding, and stretching operations. Contents of the invention [0003] The purpose of the present invention is to provide a flexible battery electrode and its manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/02H01M4/04
CPCH01M4/02H01M4/04H01M2004/021H01M2004/022Y02P70/50
Inventor 王赪胤陈鹏李家宝杨剑
Owner YANGZHOU UNIV
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