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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