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. 17, 2026
Filed:
Apr. 06, 2022
Saft America, Cockeysville, MD (US);
Saori Tokuoka, Cockeysville, MD (US);
Thomas Greszler, Cockeysville, MD (US);
John Havranek, Cockeysville, MD (US);
Jian Dong, Cockeysville, MD (US);
Xilin Chen, Cockeysville, MD (US);
Frank Cao, Cockeysville, MD (US);
SAFT AMERICA, Cockeysville, MD (US);
Abstract
A lithium-ion secondary battery, including (A) an anode including an anode active material; (B) a cathode including a cathode active material; (C) a separator; and (D) an electrolytic solution, the anode active material including (a1) about 5.0 to about 45.0 wt % natural graphite particles, and (a2) about 95.0 to about 55.0 wt % artificial graphite particles; a size of both the natural and artificial graphite particles (a1), (a2) independently being about 2.0 μm<D50<about 7.0 μm; the electrolytic solution containing (d1) an organic solvent, (d2) a charge carrier, and (d3) one or more additive compounds for forming a solid electrolyte interphase ('SEI') on the anode; and the organic solvent (d1) including about 10.0 to about 95.0 vol % of a linear ester of a Cto Csaturated acid; and a total weight of the additive compounds (d3) being about 0.20 to about 6.0 wt %.