Carbon-based ternary composite electrode material for super capacitor and preparation method for carbon-based ternary composite electrode material

A supercapacitor, carbon-based ternary technology, used in capacitors, electrolytic capacitors, electrical components, etc., to achieve high specific capacity, uniform coating, and enhanced electrochemical cycle stability.

Active Publication Date: 2014-02-26
河北中芯凤华科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, activated carbon / nano-metal oxides are obtained by blending activated carbon as a matrix with nano-metal oxides, and then polyaniline is grown and polymerized on the surface of activated carbon / nano-metal oxides through chemical in-situ polymerization, so that it is more uniformly coated on activated carbon. / Research on the formation of carbon-based ternary composite electrode materials on the surface of nano-metal oxides has not been reported

Method used

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  • Carbon-based ternary composite electrode material for super capacitor and preparation method for carbon-based ternary composite electrode material
  • Carbon-based ternary composite electrode material for super capacitor and preparation method for carbon-based ternary composite electrode material
  • Carbon-based ternary composite electrode material for super capacitor and preparation method for carbon-based ternary composite electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. The secondary activation treatment of activated carbon: add 5g activated carbon to the saturated solution of 10g activator KOH, mix well and put it into the nickel boat of the horizontal tube furnace, and blow nitrogen into the tube furnace for 20 minutes to remove the air; In a protective atmosphere, the temperature is increased to 400°C at a heating rate of 5°C / min, and kept at this temperature for 3 hours, and then heated to 800°C at a heating rate of 5°C / min and kept at this temperature for 2 hours. After the sample is cooled to room temperature, Alternately wash with 0.5mol / L hydrochloric acid solution and ethanol to neutrality, and dry to obtain secondary activated activated carbon;

[0023] 2. Preparation of activated carbon / nano-metal oxide composite material: add 0.2g of manganese dioxide nanoparticles into the ethanol solution and sonicate for 5 minutes to make the dispersion uniform, then add 10g of secondary activated activated carbon and continue sonication ...

Embodiment 2

[0031] 1. The second activation treatment of activated carbon: add 5g activated carbon to the saturated solution of 15g activator KOH, mix well and put it into the nickel boat of the horizontal tube furnace, and pour nitrogen into the tube furnace for 30 minutes to remove the air; In a protective atmosphere, the temperature is increased to 450°C at a heating rate of 8°C / min, and kept at this temperature for 4 hours, and then heated to 850°C at a heating rate of 8°C / min and kept at this temperature for 3 hours. After the sample is cooled to room temperature, Alternately wash with 0.5mol / L hydrochloric acid solution and ethanol to neutrality, and dry to obtain secondary activated activated carbon;

[0032] 2. Preparation of activated carbon / nano-metal oxide composite material: add 0.6g of titanium dioxide nanowires into the ethanol solution and sonicate for 10 minutes to make it uniformly dispersed, and then add 10g of secondary activated activated carbon and continue sonication for...

Embodiment 3

[0037] 1. The second activation treatment of activated carbon: add 4g activated carbon to the saturated solution of 16g ​​activator KOH, mix well and put it into the nickel boat of the horizontal tube furnace, and pass nitrogen to the tube furnace for 40min to remove the air; In a protective atmosphere, the temperature is increased to 450°C at a heating rate of 8°C / min, and kept at this temperature for 4 hours, and then heated to 850°C at a heating rate of 8°C / min and kept at this temperature for 3 hours. After the sample is cooled to room temperature, Alternate washing with 1mol / L hydrochloric acid solution and ethanol to neutrality, drying to obtain secondary activated activated carbon;

[0038] 2. Preparation of activated carbon / nano metal oxide composite material: add 0.8g of titanium dioxide nanowires into the ethanol solution and sonicate for 15 minutes to make the dispersion uniform, and then add 10g of secondary activated activated carbon and continue ultrasonication for 3...

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PUM

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Abstract

The invention discloses a carbon-based ternary composite electrode material for a super capacitor and a preparation method for the carbon-based ternary composite electrode material. The preparation method for the carbon-based ternary composite electrode material comprises the following steps of: firstly, performing ultrasonic dispersion on reactivated active carbon and a nanometer metallic oxide to prepare an active carbon / nanometer metallic oxide composite material; controlling the molar ratio of the active carbon / nanometer metallic oxide composite material to aniline monomer to be (3:1)-(10:1) through an in-situ polymerization method, and performing stirring reaction for 5-25h to obtain the carbon-based ternary composite electrode material for the super capacitor. According to the material, electric double-layer capacitance is provided for the super capacitor by effectively utilizing high-specific surface area active carbon. By combining with Faraday pseudocapacitance provided by conductive polyaniline, and meanwhile, by utilizing the high mechanical strength and a nanometer synergistic effect of the nanometer metallic oxide, the initial specific capacitance of the material in an organic electrolyte can reach 178F / g, and if the material is circulated for 2000 times, the specific capacitance can still be kept to be 148F / g.

Description

Technical field [0001] The invention relates to a method for preparing a carbon-based ternary composite electrode material for supercapacitors, and belongs to the field of electrochemistry and new energy materials. Background technique [0002] In the fast-developing modern society, high-performance electrochemical capacitors have been continuously applied in the fields of mobile communications, information technology, aerospace and defense technology, especially the rise of environmentally friendly electric vehicles, and high-power supercapacitors have shown unprecedented applications prospect. In the research of supercapacitors, the development of electrode materials with high specific capacity has important application value and theoretical significance. [0003] Activated carbon is the earliest and most researched supercapacitor. Its research began with related patents published by Beck et al. in 1957. It is also the main raw material for capacitor production at present. Amon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/02C08K13/06C08K9/02C08K3/04C08K3/22C08G73/02H01G9/042
CPCY02E60/13
Inventor 谭强强邱琳琳
Owner 河北中芯凤华科技发展有限公司
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