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3dsg/mn3o4/3dmg-based asymmetric supercapacitor and preparation method

A supercapacitor, 3DMG technology, applied in the field of electronics, can solve the problems of unable to reflect the capacitance performance of capacitor materials, increase the equivalent series resistance of capacitors, reduce volume, and mass-to-capacity, so as to achieve high storage capacity, low equivalent series resistance, The effect of high specific capacity

Active Publication Date: 2018-08-17
泰州巨纳新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, the weak point that this method still exists is: one, this capacitor adopts non-active material bonding agent, reduces volume, mass specific capacity, increases the equivalent series resistance of electric capacity
Second, the capacitor uses conductive additives, which increases the overall capacitance quality, reduces the capacitance performance, and cannot reflect the true capacitance performance of the capacitance material itself to a certain extent.

Method used

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  • 3dsg/mn3o4/3dmg-based asymmetric supercapacitor and preparation method

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Effect test

Embodiment 1

[0053] Embodiment 1: Based on 3DSG / Mn 3 o 4 / 3DMG Fabrication of Asymmetric Supercapacitors.

[0054] Step 1: Substrate pretreatment.

[0055] First, use a flattening machine to thin two nickel foam sheets with a thickness of 1.6mm to obtain two nickel foam sheets with a thickness of 0.25mm, and then wash the two nickel foam sheets with ethanol, deionized water, and 5M HCl solution respectively. , and then use deionized water to clean the two foamed nickel sheets respectively, and use the two foamed nickel sheets as the positive electrode base foamed nickel sheet and the negative electrode base foamed nickel sheet respectively.

[0056] Step 2: preparing the negative electrode base skeleton.

[0057] The electrochemical three-electrode method is adopted, wherein the working electrode is the negative electrode base foam nickel sheet, the reference electrode is Ag / AgCl, and the auxiliary electrode is Pt, and the negative electrode base foam nickel sheet is placed in 2M CuSO ...

Embodiment 2

[0068]Embodiment 2: Based on 3DSG / Mn 3 o 4 / 3DMG Fabrication of Asymmetric Supercapacitors.

[0069] Step A: Substrate pretreatment.

[0070] First, use a flattening machine to thin two nickel foam sheets with a thickness of 1.6mm to obtain two nickel foam sheets with a thickness of 0.25mm, and then wash the two nickel foam sheets with ethanol, deionized water, and 5M HCl solution respectively. , and then use deionized water to clean the two foamed nickel sheets respectively, and use the two foamed nickel sheets as the positive electrode base foamed nickel sheet and the negative electrode base foamed nickel sheet respectively.

[0071] Step B: preparing the negative electrode base skeleton.

[0072] The electrochemical three-electrode method is adopted, wherein the working electrode is the negative electrode base foam nickel sheet, the reference electrode is Ag / AgCl, and the auxiliary electrode is Pt, and the negative electrode base foam nickel sheet is placed in 2M CuSO 4...

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Abstract

The invention discloses an asymmetric supercapacitor based on 3DSG / Mn3O4 / 3DMG and a preparation method thereof. The asymmetric supercapacitor based on 3DSG / Mn3O4 / 3DMG comprises an anode, a cathode, electrolyte solution and a diaphragm. The anode is made of a 3DSG / Mn3O4 composite material. The cathode is also made of the 3DSG / Mn3O4 composite material. The electrolyte solution is sodium sulfate solution. The preparation method of the invention comprises the steps of preparing the 3DSG / Mn3O4 composite material of the anode, preparing the 3DSG / Mn3O4 composite material of the cathode, preparing the sodium sulfate solution as the electrolyte solution, and assembling the capacitor. The asymmetric supercapacitor and the preparation method do not require binder or conductive agent. Furthermore the asymmetric supercapacitor and the preparation method have advantages of high metal oxide utilization rate, high conductivity and high storage capability. The asymmetric supercapacitor can be used for preparing an energy storage element.

Description

technical field [0001] The invention belongs to the field of electronic technology, and further relates to a three-dimensional single-hole graphene / trimanganese tetroxide / three-dimensional porous graphene 3DSG / Mn in the field of capacitor preparation technology 3 o 4 / 3DMG asymmetric supercapacitor and preparation method thereof. The invention can be used in the preparation of energy storage elements. Background technique [0002] Supercapacitor is a new type of supercapacitor. It has an ultra-high capacitance that is 2000-6000 times larger than an electrolytic capacitor of the same volume. It can accept or release charge in a highly reversible and fast manner. Compared with batteries, supercapacitors have Long cycle life, long shelf life, short charge and discharge time, good temperature characteristics, maintenance-free and green environmental protection. Supercapacitors include electric double layer supercapacitors, pseudocapacitive supercapacitors and asymmetric super...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/36H01G11/46H01G11/24H01G11/62H01G11/84H01G11/86
CPCY02E60/13
Inventor 宁静冯欣王东张进成陆芹穆美珊郝跃
Owner 泰州巨纳新能源有限公司
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