Composite electrode material and preparing method thereof

A composite electrode and electrochemical technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of unfavorable device stability, cycle performance and service life, huge charge and discharge, and large electrode internal resistance. , to achieve the effects of easy large-scale industrial production, simple operation, good thermal conductivity and electrical conductivity

Active Publication Date: 2017-06-13
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a composite electrode material and its preparation method, aiming to solve the problem that existing electrode materials generate huge heat during charging and di

Method used

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preparation example Construction

[0021] And, the embodiment of the present invention also provides a preparation method of a composite electrode material, comprising the following steps:

[0022] S01. Provide a carbon-based film, and deposit a porous metal on one surface of the carbon-based film by electroplating to prepare a porous metal layer;

[0023] S02. In situ growing an electrochemically active material on the surface of the porous metal layer to prepare an electrochemically active material layer.

[0024] Specifically, in the above step S01, the carbon-based film includes a graphene film and a graphite film. Before electroplating, it also includes cutting the carbon-based film to obtain a material with a suitable size and suitable as an electroplating electrode. As a specific example, the graphite film or graphene film can be cut into 4cm*1cm, and the area for subsequent deposition of porous metal is 1cm 2 .

[0025] In the embodiment of the present invention, the carbon-based film is used as an e...

Embodiment 1

[0062] A preparation method of a composite electrode material, comprising the following steps:

[0063] S11. Provide graphene film and cut it into 1*4cm 2 strip.

[0064] S12. Connect the graphene film to the cathode, and the platinum sheet electrode to the anode, and get 100ml of basic plating solution (0.1M NiCl 2 ·6H 2 O+2M NH 4 Cl), at 2A / cm 2 Electrodeposition at a current density of 60s, where the deposited area is 1cm 2 .

[0065] S13. With 20ml solution (0.03M Ni(NO 3 ) 2 ·6H 2 O, 0.01M Mn(COOH) 2 ·6H 2 O and 0.56g urotropine) and transferred to a hydrothermal axe. The graphene electrode deposited with porous nickel was put into a hydrothermal ax and kept at 80°C for 14 hours. After the electrode was taken out, it was washed several times with deionized water and ethanol, and dried.

[0066] The thermal conductivity of the prepared graphene composite electrode was calculated by the laser thermal conductivity tester to be 543.863W m -1 K -1 , much higher t...

Embodiment 2

[0068] A preparation method of a composite electrode material, comprising the following steps:

[0069] S21. Provide graphene film and cut it into 1*4cm 2 strip.

[0070] S22. Connect the graphene film to the cathode, and the platinum sheet electrode to the anode, and get 100ml of basic plating solution (0.1M NiCl 2 ·6H 2 O+2M NH 4 Cl), at 2A / cm 2 Electrodeposition at a current density of 40s, where the deposited area is 1cm 2 .

[0071] S23. With 20ml solution (0.03M Ni(NO 3 ) 2 ·6H 2 O, 0.01M Mn(COOH) 2 ·6H 2 O and 0.56g urotropine) and transferred to a hydrothermal axe. The graphene electrode deposited with porous nickel was put into a hydrothermal ax and kept at 80°C for 14 hours. After the electrode was taken out, it was washed several times with deionized water and ethanol, and dried.

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Abstract

The invention provides a composite electrode material and a preparing method thereof. The composite electrode material comprises a carbon-based film, a porous metal layer and an electrochemical activity substance layer, wherein the carbon-based film, the porous metal layer and the electrochemical activity substance layer are sequentially arranged; the electrochemical activity substance layer is formed in an in-situ-growth mode on the surface of the porous metal layer. The preparing method of the composite electrode material includes the following steps that the carbon-based film is provided, porous metal is deposited on a surface of the carbon-based film with the electroplating method, and the porous metal layer is prepared; electrochemical activity substances grow on the surface of the porous metal layer in an in-situ mode, and the electrochemical activity substance layer is prepared.

Description

technical field [0001] The invention belongs to the field of composite electrode materials, in particular to a composite electrode material and a preparation method thereof. Background technique [0002] With the rapid development of society, non-renewable resources are decreasing day by day, and environmental pollution is becoming more and more serious. There is an urgent need to develop and utilize new types of high-efficiency green energy, but these are inseparable from electrochemical energy storage. In recent years, there have been many studies on electrochemical energy storage devices, mainly in the field of lithium-ion batteries and supercapacitors. They can provide good energy density and power density, and have excellent cycle performance and good stability; some are even flexible and can be fabricated into wearable devices, thereby expanding their application fields. Therefore, electrochemical energy storage will continue to become a hot spot and focus of research...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/32H01G11/86
CPCY02E60/13H01G11/86H01G11/30H01G11/32
Inventor 孙蓉姜莉符显珠
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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