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Supercapacitor using nickel aluminum hydrotalcite nanometer material as anode material

A nickel-aluminum hydrotalcite and supercapacitor technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problem of low energy density, achieve the effect of improving reaction rate, long cycle life, and improving contact surface

Active Publication Date: 2015-07-15
四川英能基科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a supercapacitor using nickel-aluminum hydrotalcite nanomaterials as the positive electrode material to solve the problem that the voltage drop curve of the existing nickel-aluminum hydrotalcite supercapacitor constant current discharge process is a straight line, resulting in very high energy density. Low

Method used

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  • Supercapacitor using nickel aluminum hydrotalcite nanometer material as anode material
  • Supercapacitor using nickel aluminum hydrotalcite nanometer material as anode material
  • Supercapacitor using nickel aluminum hydrotalcite nanometer material as anode material

Examples

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Effect test

Embodiment 1

[0048] The assembled device structure is as figure 2 As shown, the assembly of the positive electrode material and the positive electrode current collector is to mix the prepared nano-flower-shaped nickel-aluminum hydrotalcite, carbon black and binder at a mass ratio of 80:15:5 and then coat it on the foamed nickel current collector. The thickness is 10-50um. The assembly of the negative electrode material and the negative electrode current collector is to coat the activated carbon material on the nickel foam current collector, and the coating thickness is 10-50um. Separate the assembled positive and negative electrodes with an electrode separator and place them in KOH electrolyte for soaking, and finally assemble them into a battery. The constant current discharge curve is as follows: image 3 shown.

[0049] Depend on image 3 As can be seen from the constant current discharge curve of the supercapacitor of the present invention, the discharge curve of the supercapacitor...

Embodiment 2

[0067] The assembled device structure is as figure 2 As shown, the assembly of the positive electrode material and the positive electrode current collector is to mix the prepared three-dimensional nano-flower-shaped nickel-aluminum hydrotalcite, nano-graphene and binder at a mass ratio of 75:20:5 and then coat it on the foamed nickel current collector. Coating thickness is 10-50um. The assembly of the negative electrode material and the negative electrode current collector is to coat the activated carbon material on the nickel foam current collector, and the coating thickness is 10-50um. The assembled positive electrode and negative electrode are separated by an electrode separator, placed in KOH electrolyte for soaking, and finally assembled into a battery.

[0068] The preparation process is similar to Example 1.

Embodiment 3

[0070] The assembled device structure is as figure 2 As shown, the assembly of the positive electrode material and the positive electrode current collector is to mix the prepared nickel-aluminum hydrotalcite, carbon nanotubes and binder at a mass ratio of 85:10:5 and then coat it on the foamed nickel current collector. The coating thickness It is 50um. The assembly of the negative electrode material and the negative electrode current collector is to coat the activated carbon material on the nickel foam current collector, and the coating thickness is 50um. The assembled positive electrode and negative electrode are separated by an electrode separator, placed in KOH electrolyte for soaking, and finally assembled into a battery.

[0071] The preparation process is similar to Example 1.

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Abstract

The invention discloses a supercapacitor using a nickel aluminum hydrotalcite nanometer material as an anode material. The supercapacitor comprises an anode current collector, an anode material, a battery diaphragm, an electrolyte, a cathode material and a cathode current collector, wherein the anode material adopts the nanometer flower-shaped nickel aluminum hydrotalcite material. The nanometer flower-shaped nickel aluminum hydrotalcite material is large in specific surface area, excellent in electrochemical performance, good in electrochemical reversible reaction and stable and reliable in performance; the prepared supercapacitor with the negative symmetrical structure can obtain the characteristics of high capacity density and high power density.

Description

technical field [0001] The invention belongs to the field of supercapacitors, and in particular relates to a supercapacitor using nickel-aluminum hydrotalcite nanomaterials as positive electrode materials. Background technique [0002] With the development and upgrading of electronic products and mobile equipment, the short-board effect of the battery, which is the core component of energy supply, is becoming more and more obvious. At present, the insufficient energy density of batteries restricts the battery life of portable electronic products, such as mobile phones, tablets, navigation Equipment and game consoles, etc.; insufficient power density restricts the use of power electronic products, such as electric vehicles, electric bicycles, etc.; the slow charging speed of existing batteries has greatly reduced the range of use of various electronic products and mobile equipment, and seriously hindered its further development. It is of great significance to develop energy ...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/24
CPCY02E60/13H01G11/30H01G11/24
Inventor 陈泽祥李海王艳张继君
Owner 四川英能基科技有限公司
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