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Preparation method of active carbon electrode for double electric layer capacitor

An electric double layer capacitor and activated carbon technology, applied in the manufacture of hybrid/electric double layer capacitors, electrolytic capacitors, capacitors, etc., can solve the problems of short cycle life, unstable electrode performance, etc. Small resistance and stable performance

Inactive Publication Date: 2011-05-04
SHANGHAI INST OF SPACE POWER SOURCES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most electrodes using this method have disadvantages such as unstable performance and short cycle life.

Method used

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  • Preparation method of active carbon electrode for double electric layer capacitor
  • Preparation method of active carbon electrode for double electric layer capacitor
  • Preparation method of active carbon electrode for double electric layer capacitor

Examples

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Embodiment Construction

[0014] The activated carbon electrode for an electric double layer capacitor in this example is composed of activated carbon material, conductive agent, binder, solvent and metal matrix. The specific surface area of ​​the activated carbon material used is 300-3000m 2 / g, the particle size is 5~50μm, and the tap density is 0.3~1.0g / cm 3 , the conductive agent is one or more of graphite, carbon black, carbon fiber, carbon nanotube, etc. The binder is polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), poly(vinylidene fluoride-hexafluoropropylene) copolymer (PVDF-HFP), sodium carboxymethylcellulose (CMC), One or more of polyvinyl alcohol (PVA), carboxylated styrene-butadiene rubber (SBR), etc. The solvent is one or more of N-methylpyrrolidone, ethanol, propanol, isopropanol, acetone, tetrahydrofuran, water and the like.

[0015] The preparation method of the activated carbon electrode for the electric double layer capacitor of this example, its steps are: (1) put t...

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Abstract

The invention relates to a chemical power source product, aiming at providing a preparation method of an active carbon electrode for a double electric layer capacitor. The preparation method is characterized by comprising the following steps: 1. filling binder into solvent, and fully stirring until the mixture is dissolved evenly; 2. after the active carbon and conductive agent powder are mixed, pouring into a binder solution, and fully mixing until even active carbon sizing agent is formed; and 3. evenly coating the active carbon sizing agent on a metallic matrix, drying and pressing to form the active carbon electrode. The active carbon electrode prepared by the method has the advantages of good aridity, small internal resistance, stable performance, long cycle life and the like.

Description

technical field [0001] The invention relates to chemical power supply products, in particular to a method for preparing activated carbon electrodes for electric double-layer capacitors. Background technique [0002] An electric double layer capacitor is a type of electrochemical capacitor (also known as a supercapacitor). Electric double layer capacitors store and release energy through a rapid and reversible charge adsorption / desorption process on the surface of carbon electrodes with high specific surface area. 10 to 100 times. With its unique performance advantages, electric double layer capacitors are especially suitable for short-term high-power output occasions, and will be widely used in locomotive starting, UPS, energy recovery, laser weapons, electromagnetic guns and other fields. [0003] Electrodes of electric double layer capacitors include carbon fiber electrodes, activated carbon electrodes, and carbon airgel electrodes. The current electrode preparation met...

Claims

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Application Information

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IPC IPC(8): H01G9/058H01G11/86
Inventor 杨晨章庆林顾梅嵘
Owner SHANGHAI INST OF SPACE POWER SOURCES
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