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Preparation method of electrode paste of dual-electric-layer supercapacitor

A supercapacitor and electric double layer technology, which is applied in the manufacture of hybrid/electric double layer capacitors and hybrid capacitor electrodes, can solve the problems of increasing slurry processing procedures, increasing solvent pollution, and high environmental requirements, so as to achieve good electrical conductivity and environmental protection. Friendly, Inexpensive Effects

Inactive Publication Date: 2018-02-09
中国科学院苏州纳米技术与纳米仿生研究所南昌研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new technology makes it possible for an electrical device called Super Capacitor (SC) that has high energy storage capacity without adding too much weight or volume compared with traditional batteries. It also includes a special material made from pure Water instead of expensive chemicals like Lithium Ion Battery XL2O4). By making this unique solution, there will be fewer components needed while still maintaining its effectiveness at storing more electricity per unit mass.

Problems solved by technology

Technological Problem addressed by this patented technical problem relates to improving the dispersing properties of ultracapaces that use activated carbons as well as conductive agents like carbon Blacks during manufacturing processes. Current methods involve adding surfactants at different stages along with multiple dilutions involving expensive liquids, leading to increased costs associated therewith.

Method used

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  • Preparation method of electrode paste of dual-electric-layer supercapacitor
  • Preparation method of electrode paste of dual-electric-layer supercapacitor

Examples

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example 1

[0023] The preparation method of the electric double layer supercapacitor slurry of this embodiment:

[0024] (1) First add 8L of distilled water into the mechanical stirring tank, then add 20g of CMC at a mechanical stirring speed of 1200r / min, after stirring for 40 minutes, then add 30g of conductive carbon black, 50g of carbon nanotubes and 870g of activated carbon.

[0025] (2) After mechanically stirring the above mixture for 1 hour, pump it into a sand mill to disperse. After dispersing for 1 hour, add 30g of binder SBR and continue dispersing for 1 hour. Finally, the above slurry is directly sent to the coating machine for electrode coating.

[0026] Result: Not only makes the slurry evenly dispersed, but also simplifies the process flow.

example 2

[0028] The preparation method of the electric double layer supercapacitor slurry of this embodiment:

[0029] (1) First add 8L of distilled water into the mechanical stirring tank, then add 20g of CMC at a mechanical stirring speed of 1200r / min, after stirring for 40 minutes, add 40g of conductive carbon black, 40g of carbon nanotubes and 870g of activated carbon.

[0030] (2) After mechanically stirring the above mixture for 1 hour, pump it into a sand mill to disperse. After dispersing for 1 hour, add 30g of binder SBR and continue dispersing for 1 hour. Finally, the above slurry is directly sent to the coating machine for electrode coating.

[0031] Results: The conductivity of the electrode material was further improved.

example 3

[0033] The preparation method of the electric double layer supercapacitor slurry of this embodiment:

[0034] (1) First add 8L of distilled water into the mechanical stirring tank, then add 20g of CMC at a mechanical stirring speed of 1200r / min, after stirring for 40 minutes, then add 20g of conductive carbon black, 30g of carbon nanotubes and 900g of activated carbon.

[0035] (2) After mechanically stirring the above mixture for 1 hour, pump it into a sand mill to disperse. After dispersing for 1 hour, add 30g of binder SBR and continue dispersing for 1 hour. Finally, the above slurry is directly sent to the coating machine for electrode coating.

[0036] Result: The specific capacitance of the electrode is further improved, but the conductivity becomes worse.

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Abstract

The invention discloses a preparation method of electrode paste of a dual-electric-layer supercapacitor, and belongs to the field of a supercapacitor. The process comprises the following steps of adding distilling water into a mechanical stirring barrel firstly, performing ultrasonic stirring and dispersing, and next, adding a dispersing agent while mechanical stirring, and after stirring for a certain time, adding a composite conductive agent and an electrode active material; performing complete mechanical stirring on the mixed material, then pumping the material to a sand mill to perform dispersion, and next, adding a binder; and finally, directly conveying the paste to a coating machine to perform electrode coating. The sand mill is adopted for electrode paste preparation, and the composite conductive agent and the electrode active material are dispersed at the same time, so that the paste can be dispersed uniformly and the technological process is also simplified.

Description

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Claims

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Application Information

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Owner 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院