Lithium ion capacitor and preparation method thereof

A technology of capacitors and lithium ions, applied in the field of electrochemical energy storage, can solve problems such as unsatisfactory and inconvenient users

Inactive Publication Date: 2021-04-27
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium-ion capacitors are a new type of energy storage device that can provide high energy density, but in actual use, lithium-ion capacitors often have a fixed capacitance value, which cannot meet the application scenarios that require capacitance changes, causing inconvenience to users

Method used

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  • Lithium ion capacitor and preparation method thereof
  • Lithium ion capacitor and preparation method thereof
  • Lithium ion capacitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the present embodiment provides a lithium ion capacitor, comprising:

[0029] An electrode plate group, the electrode plate group includes a negative electrode plate 2 and a positive electrode plate 3, the positive electrode plate 3 and the negative electrode plate 2 are spirally arranged with the axis core as the center, the positive electrode plate 3 and the negative electrode plate 2 there is a gap between

[0030] The shaft core 4 is located in the center of the housing 1, and the shaft core 4 is fixedly connected to the top and bottom of the housing 1;

[0031] The electrode plate group is placed in the casing 1, the casing 1 is filled with electrolyte, the negative electrode plate 3 is fixed and electrically connected to the negative electrode current collecting part at the bottom of the casing, the positive electrode plate 2 is connected to the The positive current collecting part on the top of the housing is electrically connected; ...

Embodiment 2

[0044] The present embodiment provides a kind of preparation method of lithium ion capacitor, such as image 3 As shown, the method includes:

[0045] Step 101: Prepare the positive electrode: mix the positive active material, the conductive agent, the binder and the dispersant evenly, and then coat the positive electrode current collector, and obtain the positive electrode plate 3 after vacuum drying and rolling;

[0046] Step 102: Prepare the negative electrode: use the spherical polyimide carbon material as the negative electrode active material, mix the negative electrode active material, the conductive agent and the binder evenly, and then coat it on the negative electrode current collector, after vacuum drying and rolling Obtain the negative plate 2;

[0047] Step 103: Install a moving part 5 on the positive plate, and make the moving part 5 protrude from the top of the casing, and set a dynamic sealing method between the moving part and the casing 1, and connect the po...

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Abstract

The invention relates to a lithium ion capacitor and a preparation method therefor. The method enables a positive plate and a negative plate to achieve the relative movement through the arrangement of a moving part on the positive plate, thereby changing the relative area of the positive plate and the negative plate, achieving the adjustment of the capacitance value of the lithium ion capacitor in a certain range, and improving the applicability of the capacitor. Meanwhile, by improving the positive and negative plates of the capacitor and the electrolyte, the output efficiency of the capacitor is improved, and safer and more stable charging and discharging are also realized.

Description

technical field [0001] The invention relates to the technical field of electrochemical energy storage, in particular to a lithium ion capacitor and a preparation method thereof. Background technique [0002] With the development and utilization of efficient and clean renewable energy such as solar energy, wind energy, tidal energy, and biomass energy, as the key to the storage and conversion of new energy, lithium-ion capacitors have also been more and more widely used. [0003] Lithium-ion capacitors are a new type of energy storage device that can provide high energy density. However, in actual use, lithium-ion capacitors often have a fixed capacitance value, which cannot meet the application scenarios that require capacitance changes, causing inconvenience to users. Contents of the invention [0004] The purpose of the present invention is to provide a lithium ion capacitor and its preparation method, which can adjust the capacitance within a small range to meet the act...

Claims

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Application Information

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IPC IPC(8): H01G5/14H01G5/011H01G11/06H01G11/58H01G11/60H01G11/24H01G11/30H01G11/28H01G11/84
CPCH01G5/14H01G5/011H01G11/06H01G11/58H01G11/60H01G11/24H01G11/30H01G11/28H01G11/84Y02E60/13
Inventor 隋竹银朱晓明李永鹏裴子媛
Owner YANTAI UNIV
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