The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2026
Filed:
Sep. 08, 2022
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Marie-Eve Yvenat, Grenoble cedex, FR;
Philippe Azais, Grenoble cedex, FR;
Benoît Chavillon, Grenoble cedex, FR;
Eric Mayousse, Grenoble cedex, FR;
Fabien Perdu, Grenoble cedex, FR;
Abstract
A process may form a potassium-ion hybrid super-capacitor. Such a process may include: charging a potassium-ion hybrid supercapacitor including (i) a negative electrode comprising graphite, (ii) a positive electrode comprising activated carbon, and (ii) an electrolyte comprising a potassium salt, at constant current in a protocol of between Cx/50 and Cx/2, to a charge cutoff voltage of between 3.0 V and 3.3 V; holding the supercapacitor at the charge cutoff voltage until the leakage current is between Cx/2000 and Cx/500; and discharging the supercapacitor at constant current in a protocol of between Cx/50 and Cx, to a discharge cutoff voltage of between 0 V and 2 V, wherein the process further includes degassing the supercapacitor after the charging, the holding, or the discharging.