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, applied in capacitors, electrolytic capacitors, electrical components, etc., to achieve uniform coating, high specific capacity, and enhanced electrochemical cycle stability

Active Publication Date: 2012-07-18
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

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Experimental program
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Effect test

Embodiment 1

[0022] 1. Secondary activation treatment of activated carbon: Add 5 g of activated carbon to a saturated solution containing 10 g of activator KOH, mix well and put it into the nickel boat of the horizontal tube furnace, and pass nitrogen to the tube furnace for 20 minutes to remove the air; Under a protective atmosphere, heat up to 400°C at a heating rate of 5°C / min, keep at this temperature for 3 hours, then heat at a heating rate of 5°C / min to 800°C and keep 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 until neutral, dry to obtain secondary 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 ultrasonically disperse them evenly for 5min, then add 10g of activated carbon for secondary activation and continue ultrasonically for 20min to oxidize the nano-m...

Embodiment 2

[0031] 1. Secondary activation treatment of activated carbon: Add 5g of activated carbon to a saturated solution containing 15g of activator KOH, mix well and put it into the nickel boat of the horizontal tube furnace, and pass nitrogen to the tube furnace for 30 minutes to remove the air; Under a protective atmosphere, heat up to 450°C at a heating rate of 8°C / min, keep at this temperature for 4 hours, then heat to 850°C at a heating rate of 8°C / min and keep 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 until neutral, dry to obtain secondary activated carbon;

[0032] 2. Preparation of activated carbon / nano-metal oxide composite material: Add 0.6g of titanium dioxide nanowires to the ethanol solution and ultrasonically disperse it for 10 minutes to make it evenly dispersed, then add 10g of secondary activated carbon to it and continue ultrasonicating for 25min to make the n...

Embodiment 3

[0037] 1. Secondary activation treatment of activated carbon: Add 4g of activated carbon to a saturated solution containing 16g of activator KOH, mix well and put it into the nickel boat of the horizontal tube furnace, and pass nitrogen to the tube furnace for 40 minutes to remove air; Under a protective atmosphere, heat up to 450°C at a heating rate of 8°C / min, keep at this temperature for 4 hours, then heat to 850°C at a heating rate of 8°C / min and keep at this temperature for 3 hours, after the sample is cooled to room temperature, Alternately wash with 1mol / L hydrochloric acid solution and ethanol until neutral, dry to obtain secondary activated carbon;

[0038] 2. Preparation of activated carbon / nano-metal oxide composite material: Add 0.8g of titanium dioxide nanowires to the ethanol solution and ultrasonically disperse it for 15 minutes to make it evenly dispersed, then add 10g of secondary activated carbon to it and continue ultrasonicating for 30min to make the nano-me...

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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 preparation method of a carbon-based ternary composite electrode material for a supercapacitor, belonging to the fields of electrochemistry and new energy materials. Background technique [0002] In the rapidly developing modern society, high-performance electrochemical capacitors have been continuously applied in the fields of mobile communications, information technology, aerospace and national 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 studied supercapacitor. Its research began with the related patents published by Beck et al. in 1957, and it is also the main raw material for capacitor pro...

Claims

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Application Information

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Patent Type & Authority Applications(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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