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List of KIMM TechnologiesNano-convergence Manufacturing Research Division

High Performance Supercapacitor Manufacturing Technology Using Cross–linkable Polymer Binder

Division Nano-Convergence Manufacturing Systems Research Division > Department of Flexible & Printed Electronics
Name Dr. Yunseok Jang
Department Department of Printed Electronics
Tel +82 - 42 - 868 – 7469
E-mail yjang@kimm.re.kr
Attachment Download 030_High_Performance_Supercapacitor_Manufacturing_Technology_Using_Cross_linkable_Polymer_Binder.pdf (1.1 KB)

Technique to improve the performance of supercapacitor by preventing hydrophilic activated carbon from dissolving in electrolyte solution and improving affinity with electrolyte by using cross-linkable polymer binder

Technology to improve the performance of supercapacitor by using cross-linkable polymer binder to reduce the content of binder, which is an insulator

 

Client / Market

  • Supercapacitor/battery manufacturer

 

Necessity of this Technology

  • Most supercapacitors use water-based electrolyte.
  • In order to increase the affinity between the electrolyte and the activated carbon, it is recommended to substitute the hydroxyl group on the activated carbon surface to make it hydrophilic.
  • When using existing materials, the hydrophilic group on the activated carbon surface causes the electrode to dissolve in the electrolyte.
  • Increases the affinity of the water-based electrolyte and the activated carbon to help form an electric double layer on the surface of the activated carbon.
  • Enhanced electric double layer helps improving capacity of the supercapacitor.
  • Unlike existing binder, cross-linkable polymer binder prevents the hydrophilic electrode from dissolving in electrolyte.

 

Technical Differentiation

  • Activated carbon shows a capacity of 100 ~ 120 F/g in 1M H2SO4 electrolyte.
  • When using activated carbon with hydroxyl group on the surface and a cross-linkable polymer binder, a high capacity of 154 F/g was obtained in 1 M Na2SO4 electrolyte.
  • Supercapacitors can be manufactured by overcoming the limitation of existing materials.

 

Excellence of Technology

  • High stability of ink due to high affinity of solvent, electrode and binder
  • High capacity of 154 F/g in 1 M Na2SO4 electrolyte
  • Publication : Y. Jang et. al, Activated carbon nanocomposite electrodes for high performance supercapacitors, Electrochimica Acta 102 (2013) 240-245

 

Current Intellectual Property Right Status

PATENT
  • High Performance Functionalized Activated Carbon Supercapacitor by Using Curable Polymer Binder (KR1325952)
  • Electrode Composition for Supercapacitor, Electrode including Cured Material, and Supercapacitor including Electrode (US9318276)
  • High Performance Functionalized Activated Carbon Supercapacitor by Using Curable Polymer Binder (Japan-in process)
  • Manufacturing Method for Silver Membrane with Non-woven Tissue and Silver Membrane Manufactured Thereof, Manufacturing Method of Current Collectors for Supercapacitor or Battery Using Silver Membrane with Non-woven Structure (KR1597535)

 

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