US 11,342,132 B2 – Electrode for Supercapacitor, Preparation Method and Use Thereof
Researchers: Prof. Daniel Qi TAN, Dayarker GANDLA, Guanghui SONG
Categories: Electrochemistry
Jurisdiction: United States
Current status: Granted
Basic Information
The present disclosure relates to an electrode for supercapacitor, preparation method and use thereof. The electrode comprises an electrode terminal, an active layer and a coating layer from inside to outside. A material for preparing the coating layer comprises an oxygenated compound, which contains at least one of transition metal elements or is doped with a substance containing a transition metal element. Providing the coating layer on the surface of the active layer prevents organic electrolytes from being easily adsorbed and nucleated in the porous structure of the electrode surface due to interface defects and facilitates to weaken the interface problems existing between the electrolyte and the electrode surface. The capacitor prepared by means of the electrode according to the embodiments of the present disclosure can significantly increase the operating voltage window (may be up to above 4V) and capacitance of the supercapacitor, and further increase energy density thereof.
Innovation
The electrode of the present disclosure weakens the issues of the interface between the electrolyte and the electrode surface by providing a coating layer on the surface of the active layer, such that the electrode terminal can withstand a higher operating voltage, and the operating voltage window and capacitance of the electrochemical container can be further significantly increased.
It has many advantages such as high capacity, high energy density, high charge-discharge current and long cycle lifetime. Its applications are still expanding.