A method for improving the capacitance of the positive electrode of an organic system electrochemical capacitor

An organic system, electrochemical technology, applied in the field of organic system electrochemical supercapacitor, can solve problems such as the inability to apply electrochemical supercapacitor

Inactive Publication Date: 2011-11-30
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these inventions are only applicable to water-based electrochemical supercapacitors, and cannot be applied to organic system electrochemical supercapacitors

Method used

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  • A method for improving the capacitance of the positive electrode of an organic system electrochemical capacitor
  • A method for improving the capacitance of the positive electrode of an organic system electrochemical capacitor
  • A method for improving the capacitance of the positive electrode of an organic system electrochemical capacitor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the first step, 1 mg of ferrocene (FC) is first added to the N-methylpyrrolidone solution containing 10 mg of binder polyvinylidene fluoride, and the ferrocene is completely dissolved in an ultrasonic disperser by ultrasonic oscillation. Dissolve in the binder solution, the ultrasonic time is 60min, the ultrasonic power is 100W, and then stand for 5min; the second step, add 80mg of activated carbon powder with high specific surface area and 10mg of conductive carbon black into the binder solution, stir evenly, Then put the slurry into an ultrasonic disperser for 1 hour, so that the components in the slurry are completely dispersed evenly, and the ferrocene is highly dispersed in the activated carbon powder; the third step is to coat the uniformly dispersed slurry on the conductive substrate , such as the surface of aluminum foil, put it in an oven, dry it under vacuum at 110°C for 3 hours, and then cool it down to room temperature naturally.

[0023] Take out the dri...

Embodiment 2

[0026] In the first step, 5 mg of ferrocene is first added to the N-methylpyrrolidone solution containing 10 mg of binder polyvinylidene fluoride, and the ferrocene is completely dissolved in the viscous solution by ultrasonic oscillation in an ultrasonic disperser. In the binder solution, the ultrasonic time is 1h, the ultrasonic power is 400W, and then it is left to stand for 10min; the second step is to add 80mg of activated carbon powder with a high specific surface area and 10mg of conductive carbon black to the binder solution, stir evenly, and then put the slurry The material is put into an ultrasonic disperser and ultrasonicated for 2 hours, so that the components in the slurry are completely dispersed evenly, and the ferrocene is highly dispersed in the activated carbon powder; the third step is to coat the uniformly dispersed slurry on a conductive substrate, such as aluminum foil surface, put it in an oven, dry it under vacuum at 110°C for 5 hours, and let it cool do...

Embodiment 3

[0030] In the first step, 10 mg of ferrocene is first added to the N-methylpyrrolidone solution containing 10 mg of binder polyvinylidene fluoride, and the ferrocene is completely dissolved in the viscous solution by ultrasonic oscillation in an ultrasonic disperser. In the binder solution, the ultrasonic time is 3 hours, the ultrasonic power is 600W, and then it is left to stand for 30 minutes; the second step is to add 80 mg of activated carbon powder with a high specific surface area and 10 mg of conductive carbon black into the binder solution, stir evenly, and then put the slurry The material is put into an ultrasonic disperser and ultrasonicated for 5 hours, so that the components in the slurry are completely dispersed evenly, and the ferrocene is highly dispersed in the activated carbon powder; the third step is to coat the uniformly dispersed slurry on a conductive substrate, such as aluminum foil surface, put it in an oven, dry it under vacuum at 110°C for 12 hours, an...

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Abstract

The invention designs a method for improving electric capacity of an anode of an electrochemical supercapacitor of an organic system, and belongs to the field of electrochemical supercapacitors. The method is characterized in that cyclopentadienyl transition metal complex is taken as an anode active additive, and the anode is made of active carbon materials with high specific surface area. The technical method is characterized in that: a small amount of the cyclopentadienyl transition metal complex is added as the active additive in the process of processing the anode, and molecules of the complex provide oxide reduction pseudo-capacitance, improve the electric capacity of the anode of the electrochemical supercapacitor, reduce ohmic resistance, and improve energy density by 5 to 50 percent. The method is simple, and the additive is little but can effectively improve the performance of the anode of the electrochemical capacitor of the organic system.

Description

technical field [0001] The invention relates to the field of electrochemical capacitors, electrochemical energy storage and conversion equipment, and can be used for organic system electrochemical supercapacitors with high specific surface area conductive materials as positive electrodes. Background technique [0002] Electrochemical supercapacitor is an electrochemical element whose energy storage process is reversible. Compared with lithium-ion secondary batteries, it can be charged and discharged with a large current, and the charging times can reach 10 6 more than times. At present, most of the electrode materials of electrochemical supercapacitors with mature technology are activated carbon, and the principle of ion adsorption / desorption between the activated carbon electrode and the electrolyte is used to store energy. Activated carbon obtains electric double-layer capacitance through a huge specific surface area, but due to the existence of ineffective micropores, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/058H01G9/038H01G11/86
CPCY02E60/13
Inventor 李建玲高飞
Owner UNIV OF SCI & TECH BEIJING
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