Preparation method of electrode slice
A technology of electrode sheet and electrode slurry, which is applied in the field of electrode sheet preparation
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[0018] The preparation method of the electrode sheet is further described in detail below mainly in conjunction with the accompanying drawings.
[0019] like figure 1 As shown, a method for preparing an electrode sheet according to an embodiment includes the following steps:
[0020] S10. Build 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 graphics software, such as Pro / Engineer, UG (Unigraphics NX) and other graphics 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 are 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 to 500 μm, the width of the electrode sheet is in the ...
Example Embodiment
[0056] Example 1
[0057] The three-dimensional model of the pre-prepared electrode sheet is constructed by the computer professional software Pro / Engineer, and the blank area is reserved. For the corroded aluminum foil with a width of 600mm and a thickness of 22μm, 18 sets of electrode models with a width of 30mm and a length of 675mm are designed on the front, and 18 sets of electrode models with a width of 30mm and a length of 655mm are designed on the reverse side. The total thickness of the film is 222 μm, and it is sliced in layers, and each pre-printed film layer is designed to be 50 μm and imported into the 3D printer. Prepare electrode slurry, and mix the electrode material, conductive agent and binder in a mass ratio of 80:10:10, wherein the electrode material is activated carbon, the conductive agent is Ketjen black, and the binder is mass ratio 50:50 styrene-butadiene rubber and carboxymethyl cellulose. Deionized water was added to adjust the solid content of t...
Example Embodiment
[0058] Example 2
[0059] The three-dimensional model of the pre-prepared electrode sheet is constructed by the computer professional software Pro / Engineer. For the corroded aluminum foil with a width of 0.5mm and a thickness of 22μm, the front side is designed with a width of 0.5mm and a length of 1000mm, and the reverse side is designed with a width of 0.5mm and a length of 955mm. 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 into layers. Each pre-printed film layer is designed to be 120 μm and imported into the 3D printer. Prepare electrode slurry, and mix the electrode material, conductive agent and binder in a 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 40:60 SBR and carboxymethyl cellulose. Deionized water was added to adjust the solid content of the electrode slurry to 70%, and ...
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