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Three-dimensional electrode material and preparation method thereof, solid supercapacitor

A technology for supercapacitors and three-dimensional electrodes, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors, etc., can solve the problems of small contact area of ​​active materials, improve area specific capacitance, increase energy density, improve rate characteristics and The effect of cycle performance

Active Publication Date: 2019-03-08
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the nano-manganese dioxide electrode prepared by this method has relatively good electrical conductivity and energy density (can meet the performance requirements of supercapacitors), the structure of the nano-manganese dioxide electrode formed by pressing, its active material The contact area is still small

Method used

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  • Three-dimensional electrode material and preparation method thereof, solid supercapacitor
  • Three-dimensional electrode material and preparation method thereof, solid supercapacitor
  • Three-dimensional electrode material and preparation method thereof, solid supercapacitor

Examples

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Embodiment 1

[0032] This embodiment firstly provides a kind of three-dimensional electrode material, and it mainly comprises: the Al nano nail array formed on the aluminum foil; The nickel layer formed on the Al nano nail array; The MnO formed on the nickel layer x Nanopin arrays. Further, the thickness of the nickel layer is 100-500 nm. Among them, MnO x Refers to manganese oxide, generally speaking, x=1~2, such as manganese oxide (MnO), manganese dioxide (MnO 2 ), manganese trioxide (Mn 2 o 3 ) etc., it can be a kind of manganese oxide, also can be to contain more than two kinds of manganese oxides, for example can be to contain MnO and MnO at the same time 2 . In this example, MnO x Is the choice of MnO 2 A detailed description will be given as a specific example.

[0033] Such as figure 1 As shown, the preparation method of the above-mentioned three-dimensional electrode material comprises steps:

[0034]S101, an Al nanonail array grown on an aluminum foil by using an anodic ...

Embodiment 2

[0041] This embodiment provides a solid supercapacitor. Such as Figure 4 Said, the capacitor comprises a gold-sprayed polyethylene terephthalate film 1, a first electrode 2, a second electrode 3, a first electrode 2 and a gold-sprayed polyethylene terephthalate film which are sequentially stacked. Glycol ester film 1. Wherein, the first electrode is an electrode prepared from the three-dimensional electrode material provided in Example 1, the second electrode is a CCG (chemical convert graphene, chemically converted graphene) electrode, and the first electrode and the second electrode are A gel electrolyte is attached to the two electrodes.

[0042] Wherein, the preparation of the first electrode 2 refers to the method provided in Example 1.

[0043] The preparation of the second electrode 3 specifically includes: adding 0.2 to 0.5 mL of 35 wt % hydrazine hydrate and 0.35 to 0.5 mL of 28% GO (graphiteoxide, graphite oxide) solution with a concentration of 0.5 mg / mL to 100 ...

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Abstract

The invention discloses a three-dimensional electrode material, which is characterized in that it comprises: an array of Al nanonails formed on an aluminum foil; a nickel layer formed on the array of Al nanonails; a MnO layer formed on the nickel layer x Nanopin arrays. The preparation method includes: S101, growing an Al nanonail array on an aluminum foil by using an anodic oxidation process and an etching process; S102, growing a nickel layer on the Al nanonail array by using a magnetron sputtering process; S103, using a three-electrode electric The deposition process grows MnO on the nickel layer x Nanonail arrays to obtain three-dimensional electrode materials. The invention also discloses a solid supercapacitor, which comprises the electrode prepared from the above-mentioned three-dimensional electrode material. The electrode material is applied in a solid supercapacitor, which improves the area specific capacitance of the capacitor, and also improves the rate characteristic and cycle performance of the capacitor.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a three-dimensional electrode material and a preparation method thereof, and also to a solid supercapacitor. Background technique [0002] Supercapacitors, also known as electrochemical capacitors and electric double layer capacitors, are special capacitors developed in recent years based on the electrochemical process of the electrode / solution interface and specially used for energy storage. Supercapacitors have high specific power, and the power density is hundreds of times higher than that of traditional electrolytic capacitors. Supercapacitors have a long cycle life, and the charge and discharge cycle life is as long as more than 500,000 times. Therefore, supercapacitor is an ideal secondary power supply, which has extremely important and broad application prospects in mobile communications, information technology, electric vehicles, aerospace and national defense te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/36H01G11/26H01G11/86
CPCY02E60/13
Inventor 张跃钢侯远丘勇才李桂珠杨洁刘美男周莉莎李宛飞
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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