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Preparation method of electrode slice

A technology of electrode sheet and electrode slurry, which is applied in the field of electrode sheet preparation

Inactive Publication Date: 2016-05-25
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a method for preparing an electrode sheet that can solve the problem of uniformity of the electrode sheet coating

Method used

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  • Preparation method of electrode slice

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preparation example Construction

[0018] The preparation method of the electrode sheet will be further described in detail mainly in conjunction with the accompanying drawings.

[0019] Such as figure 1 Shown, the preparation method of the electrode sheet of an embodiment, comprises the following steps:

[0020] S10. Construct a three-dimensional model for the pre-prepared electrode sheet, where the three-dimensional model includes a plurality of pre-printed film layers.

[0021] Generally, computer drawing software, such as Pro / Engineer, UG (UnigraphicsNX) and other drawing software can be used to construct a three-dimensional model of the pre-prepared electrode sheet. Electrode sheets of various shapes or patterns can be designed according to actual needs, and divided into multiple pre-printed film layers in the designed model to guide the 3D printer to print.

[0022] Generally, the total thickness of the pre-prepared electrode sheet is 50 μm-500 μm, the width range of the electrode sheet is 0.5 mm-600 mm...

Embodiment 1

[0057] Construct a three-dimensional model of the pre-prepared electrode sheet through the professional computer software Pro / Engineer, and reserve a blank area. For the corroded aluminum foil with a width of 600mm and a thickness of 22μm, 18 sets of electrode sheet models with a width of 30mm and a length of 675mm are designed on the front side, and 18 sets of electrode sheet models with a width of 30mm and a length of 655mm are designed on the reverse side. The front and back sides are aligned according to the length direction, and the electrode sheet The total thickness of the film is 222 μm, and it is processed in layers and sliced. Each pre-printed film layer is designed to be 50 μm and imported into a 3D printer. Prepare the electrode slurry, mix the electrode material, conductive agent and binder according to the mass ratio of 80:10:10, wherein the electrode material is activated carbon, the conductive agent is Ketjen Black, and the binder is the mass ratio It is 50:50 ...

Embodiment 2

[0059] The three-dimensional model of the pre-fabricated electrode sheet is constructed by the professional computer software Pro / Engineer. For the corroded aluminum foil with a width of 0.5mm and a thickness of 22μm, an electrode sheet model with a width of 0.5mm and a length of 1000mm is designed on the front side, and an electrode sheet model with a width of 0.5mm and a length of 955mm is designed on the reverse side. The front and back sides are aligned in the length direction, and the total thickness of the pole piece is 262 μm, and it is sliced ​​in layers, and each pre-printed film layer is designed to be 120 μm, and imported into a 3D printer. Prepare the electrode slurry, mix the electrode material, conductive agent and binder according to the mass ratio of 85:7.5:7.5, wherein the electrode material is activated carbon, the conductive agent is Ketjen Black, and the binder is the mass ratio It is 40:60 styrene-butadiene rubber and carboxymethyl cellulose. Add deionize...

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Abstract

The invention discloses a preparation method of an electrode slice. The preparation method comprises the steps of: constructing a three-dimensional model, which comprises a plurality of pre-printed film layers, for a pre-made electrode slice, mixing electrode materials, a conductive agent, an adhesive and a solvent to obtain an electrode slurry, and placing a current collector on a printing position of a 3D printer; and guiding the electrode slurry into the 3D printer which prints the electrode slurry layer by layer onto the current collector according to the pre-printed film layers under the condition of hot air purging, so that the electrode slice is obtained. According to the preparation method of the electrode slice, since the electrode slurry is printed onto the current collector layer by layer in the form of mixed slurry, the uniformity between coatings of the electrode slice can be effectively improved; and the electrode slurry is printed onto the current collector layer by layer under the condition of hot air purging, the printed film layers can be dried quickly, the process of film layer curing is omitted, and the one-time forming of the electrode slice is achieved.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a preparation method of an electrode sheet. Background technique [0002] Electrode production technology is the core technology of supercapacitors, and the quality of electrodes directly affects the performance of supercapacitors. Therefore, the level of electrode sheet manufacturing technology is an important indicator to measure the performance of supercapacitor products. At present, there are mainly two advanced electrode preparation processes, one is coating method (Coating technology), and the other is lamination method (Sheet technology). The coating method is inherited from the electrode preparation process of lithium-ion batteries. The common ones are the coating process using water-based solvent styrene-butadiene rubber (SBR), methyl cellulose (CMC), and the use of organic solvent polyvinylidene fluoride (PVDF). ) coating process. The lamination method is a lamin...

Claims

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Application Information

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IPC IPC(8): H01G11/86
Inventor 朱归胜付振晓徐华蕊于圣明张业华沓世我苏红娟
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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