Wire clamping structure electrode, device for preparing wire clamping structure electrode and application
A technology of clamping wire and electrode, which is applied in the direction of electrode manufacturing, electrode carrier/current collector, structural parts, etc., can solve the problems of uneven lithium deintercalation of active materials, affecting capacity development, and lithium analysis, so as to improve wettability and improve Surface density and the effect of increasing energy density
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[0071] The device for preparing an electrode with a wire structure of the present invention includes a plurality of unwinding devices 3, a coating device 4, a drying device 6, a rolling device 8 and a winding device 9 arranged in sequence, and the plurality of mesh current collectors 1 can be respectively The slurry enters the coating device 4 through different unwinding devices 3 for coating, and enters the drying device 6 and the rolling device 8 through the guide roller set 5 for subsequent drying and rolling, and finally winds up. The device of the present invention is provided with a plurality of unwinding devices 3, which can adjust the number of layers of the mesh current collector 1 and the area density of the electrode with the wire structure, and can efficiently and continuously produce electrodes with high areal density, which is conducive to the realization of high areal density, Industrial production of electrodes with high energy density.
[0072] Further, the gu...
Embodiment 1
[0080] The present embodiment provides a method for preparing a wire structure electrode for a positive electrode. Based on a device for preparing a wire structure electrode provided by a specific embodiment, the schematic structural diagram is as follows: image 3 As shown, the preparation method includes:
[0081] (1) The three-layer mesh current collector 1 is respectively passed through the unwinding device 3 and immersed in the electrode active material 2 slurry (the active material is NCM ternary material) in the coating device 4, and the mesh current collector 1 is an aluminum mesh, The thickness is 20 μm, the porosity is 80%, and the conveying speed is 20 m / min. The coating device 4 is provided with an ultrasonic device, which is then stacked at a certain distance through the guide roller group 5 and enters the drying device 6. The removal device scrapes off the excess slurry adhered to the surface of the mesh current collector 1, adjusts the temperature of the heating...
Embodiment 2
[0087] The present embodiment provides a method for preparing a wire structure electrode for a positive electrode. Based on a device for preparing a wire structure electrode provided by a specific embodiment, the schematic structural diagram is as follows: image 3 As shown, the preparation method includes:
[0088] (1) 5 layers of net-shaped current collectors 1 are respectively passed through the unwinding device 3 and immersed in the electrode active material 2 slurry (active material is NCM ternary material) in the coating device 4, and the net-shaped current collector 1 is an aluminum mesh, The thickness is 40 μm, the porosity is 90%, and the conveying speed is 10 m / min. The coating device 4 is provided with an ultrasonic device, which is then stacked at a certain distance through the guide roller group 5 and enters the drying device 6. The removal device scrapes off the excess slurry adhered to the surface of the mesh current collector 1, adjusts the temperature of the h...
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Abstract
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