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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.:

US 12586820 B1

PDFFull Text
Date of Patent:
Mar. 24, 2026

Filed:

Dec. 16, 2022

Electrolyte for lithium secondary batteries comprising ionic liquid and cosolvent and lithium secondary battery comprising the same

Applicants:

Hyundai Motor Company, Seoul, KR;

Kia Corporation, Seoul, KR;

Hanbat National University Industry-academic Cooperation Foundation, Daejeon, KR;

Inventors:

Sam Ick Son, Suwon-si, KR;

Sun Yul Ryou, Daejeon, KR;

Phiri Isheunesu, Daejeon, KR;

Hyeong Su Bae, Daejeon, KR;

Assignees:

Hyundai Motor Company, Seoul, KR;

Kia Corporation, Seoul, KR;

Hanbat National University Industry-Academic Cooperation Foundation, Daejeon, KR;

Attorney:

Morgan Lewis & Bockius LLP

Primary Examiner:

Tiffany Legette

Assistant Examiner:

Monique M Wills

Int. Cl.
CPC ...
H01M 10/00 (2006.01); H01M 4/40 (2006.01); H01M 10/052 (2010.01); H01M 10/0567 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 50/46 (2021.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0569 (2013.01); H01M 4/405 (2013.01); H01M 10/052 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01); H01M 50/46 (2021.01); H01M 2004/027 (2013.01); H01M 2300/0037 (2013.01); H01M 2300/0051 (2013.01);
Abstract

An electrolyte for lithium secondary batteries includes an ionic liquid and cosolvents and a lithium secondary battery includes the same. The electrolyte includes a mixed solvent including the ionic liquid and the cosolvents, and at least one electrolyte salt, the cosolvents include a carbonate-based solvent and a nitrile-based solvent, and the mixed solvent includes 50-80 vol % of the ionic liquid, 15-45 vol % of the carbonate-based solvent, and 5-10 vol % of the nitrile-based solvent.

Find Patent Forward Citations

Son, Sam. (2026). Electrolyte for lithium secondary batteries comprising ionic liquid and cosolvent and lithium secondary battery comprising the same (U.S. Patent No. 12586820). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12586820

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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