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:
May. 09, 2023
Filed:
Jul. 04, 2018
Lg Chem, Ltd., Seoul, KR;
Intae Park, Daejeon, KR;
Doo Kyung Yang, Daejeon, KR;
LG ENERGY SOLUTION, LTD., Seoul, KR;
Abstract
A method for producing a lithium-sulfur battery with an improved lifetime. This method includes an activation step of forming a positive electrode active material-derived compound from a compound including elemental sulfur by charging and discharging the lithium-sulfur battery, where the battery includes the compound including elemental sulfur and an electrolyte liquid. Additionally, the positive electrode active material-derived compound has a solubility of 1% by weight or greater in the electrolyte liquid. The lithium-sulfur battery may be charged and discharged in a range of greater than 2.0 V and less than 2.4 V in the activation step. Further, the lithium-sulfur battery may be charged and discharged 3 times to 10 times in the activation step. This method avoids a complicated application process of and active material in preparing a lithium-sulfur battery.