Hybrid capacitor and manufacturing method thereof

A technology for hybrid capacitors and supercapacitors, applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, multiple hybrid/electric double-layer capacitors, etc., can solve the problem of large equivalent series resistance, limited application, and poor frequency characteristics and other problems, to achieve the effect of low equivalent series resistance, large capacity, and excellent frequency characteristics

Inactive Publication Date: 2015-05-06
张彩欣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equivalent series resistance of supercapacitors is too large, resulting in poor frequency characteristics. For example, the capacity of supercapacitors drops sharply at a frequency of 1kHz, which greatly limits its application in circuits.

Method used

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  • Hybrid capacitor and manufacturing method thereof
  • Hybrid capacitor and manufacturing method thereof
  • Hybrid capacitor and manufacturing method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0037] (1) Preparation of positive plate 4 of electrolytic capacitor: cover a layer of oxide of corresponding valve metal or oxide 2 of niobium monoxide on the surface of valve metal or niobium monoxide 1 to make positive plate 4 of electrolytic capacitor;

[0038] (2) Preparation of supercapacitor positive electrode sheet 7: Cover at least one layer of positive electrode active layer 6 containing positive electrode active material on the surface of supercapacitor positive electrode current collector 5 to make supercapacitor positive electrode sheet 7, and the supercapacitor positive electrode sheet 7 is combined with electrolytic There is no direct contact between the oxides of the valve metal or the oxides 2 of niobium monoxide on the positive electrode sheet 4 of the capacitor;

[0039] (3) Connection of the positive electrode 11: connect the valve metal or niobium monoxide 1 of the positive electrode of the electrolytic capacitor and the positive current collector 5 of the ...

Embodiment 1

[0049] Example 1: Such as figure 1 As shown, wherein, the valve metal 1 of the positive plate of the electrolytic capacitor is corroded aluminum foil, and the valve metal oxide 2 covered on the surface is aluminum oxide, which is made into the positive plate 4 of the electrolytic capacitor, and the surface is also covered with conductive polyethylenedioxythiophene The solid conductive layer 3 of the supercapacitor positive electrode sheet 7 is an aluminum foil, and the surface is covered with a positive electrode active layer 6 containing activated carbon, which is made into a supercapacitor positive electrode sheet 7; the supercapacitor positive electrode sheet 7 and the surface are covered with a solid conductive layer 3 The positive electrode sheets 4 of the electrolytic capacitor are overlapped, but a diaphragm 13 is arranged between them, and the valve metal 1 of the positive electrode sheet 4 of the electrolytic capacitor and the positive current collector 5 of the posi...

Embodiment 2

[0051] Example 2: Such as figure 2 As shown, wherein, the valve metal 1 of the positive plate of the electrolytic capacitor is a sintered tantalum block, and the valve metal oxide 2 covered on the surface is tantalum pentoxide, which is made into the positive plate 4 of the electrolytic capacitor; the positive current collector 5 of the positive plate 7 of the supercapacitor It is a tantalum foil, the surface is covered with a positive electrode active layer 6 containing activated carbon, and it is made into a positive electrode sheet 7 of a super capacitor; The valve metal 1 and the positive current collector 5 of the positive plate 7 of the supercapacitor are respectively connected to the positive electrode 11 . Wherein, the negative electrode current collector 8 of the supercapacitor negative electrode sheet 10 is a tantalum foil, and the surface is covered with a negative electrode active layer 9 containing activated carbon to make a supercapacitor negative electrode sh...

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Abstract

The invention relates to a hybrid capacitor composed of a positive electrode, a negative electrode, a membrane, and an electrolyte. The positive electrode is connected with a super capacitor positive plate and an electrolytic capacitor positive plate. The super capacitor positive plate is composed of a positive current collector and a positive active layer covering the surface of the positive current collector and containing positive active materials. The electrolytic capacitor positive plate is composed of valve metal or niobium monoxide and an oxide of valve metal or an oxide of niobium monoxide covering the surface of valve metal or niobium monoxide. The super capacitor positive plate is not in direct contact with the oxide of valve metal or the oxide of niobium monoxide of the electrolytic capacitor positive plate. The negative electrode is at least connected with a super capacitor negative plate which is composed of a negative current collector and a negative active layer covering the surface of the negative current collector and containing negative active materials. The hybrid capacitor of the invention has the advantages of large capacity, low equivalent series resistance, and excellent frequency characteristics.

Description

technical field [0001] The invention relates to a hybrid capacitor and a manufacturing method thereof. Background technique [0002] A supercapacitor is a new type of component between a battery and a capacitor, which has a higher power density than a lithium-ion battery and a higher energy density than an electrolytic capacitor. However, the equivalent series resistance of supercapacitors is too large, resulting in poor frequency characteristics. For example, the capacity of supercapacitors drops sharply at a frequency of 1 kHz, which greatly limits its application in circuits. The capacity of the electrolytic capacitor is small, but the equivalent series resistance is low, and the frequency characteristic is better than that of the supercapacitor. Contents of the invention [0003] In order to effectively utilize the ultra-large capacity of the supercapacitor and the low equivalent series resistance of the electrolytic capacitor and its excellent frequency characteristi...

Claims

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Application Information

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IPC IPC(8): H01G11/12H01G11/84
CPCY02E60/13H01G11/08H01G11/26H01G11/84H01G15/00
Inventor 张易宁
Owner 张彩欣
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