Negative electrode lithium supplementing method and manufacturing method of lithium ion energy storage device
A production method and technology of lithium ions, which are applied in the production of lithium ion energy storage devices, and in the field of negative electrode lithium supplementation with a sandwich structure, can solve the problems of poor uniformity and low efficiency of negative electrode lithium supplementation, and achieve reduced transmission distance and good compatibility , the effect of controlling the uniformity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0032] Embodiment 1 of the present application provides a lithium-ion energy storage device. The lithium-ion energy storage device is a lithium-ion capacitor or a lithium-ion battery. Both the lithium-ion capacitor and the lithium-ion battery include a positive pole piece 8, a negative pole piece, an electrolyte, and a positive and negative pole. The separator 9 between them; the positive pole piece 8 includes a positive current collector and a positive active layer on the positive current collector; the negative pole piece is a sandwich structure, including two layers of porous double-sided copper-plated film current collectors, two The metal lithium electrode layer 6 between the porous double-sided copper-plated thin film current collectors and the negative electrode active layer 4 outside the two-layer porous double-sided copper-plated thin film current collectors, the electrolyte and the separator are both lithium ion capacitors and lithium ion capacitors. Conventional elec...
Embodiment 2
[0037] Embodiment 2 of the present application provides a method for manufacturing a lithium ion energy storage device, comprising the following steps:
[0038]S1, making a double-sided copper-plated thin film current collector 7, coating the negative electrode active material on one side of the double-sided copper-plated thin film current collector 7, then drying and cold pressing, die-cutting, slitting and other processes, and then The negative electrode active material is coated with a physical punching method to form holes such as figure 1 The shown porous negative electrode belt 5, the distribution of holes is as follows figure 2 shown.
[0039] S2, two rolls of porous negative electrode strips 5 and one roll of metal lithium electrode layer 6 are image 3 The structure and sequence are stacked together, the two layers of porous negative electrode belts are coated with the negative electrode active material side facing outward, the metal lithium electrode layer 6 is re...
Embodiment 3
[0047] Embodiment 3 of the present application provides a negative electrode lithium replenishment method: the scheme of external circuit control is to replenish lithium by means of short circuit, load connection or external power supply control; this embodiment adopts the control mode of external power supply to replenish lithium.
[0048] The control method of the external power supply is as follows: the negative pole ear is connected to the positive pole of the external power supply, the metal lithium electrode is connected to the negative pole of the external power supply, and then one or more than two test methods such as constant current, constant voltage and constant power are used to supplement lithium. . Experiments have shown that it is possible to control the lithium replenishment time by adjusting the constant current, constant voltage or constant power. At the same time, the lithium ions can be evenly transferred from the metal lithium to the negative electrode act...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Thickness | aaaaa | aaaaa |
| Thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More