Abstract
A lithium secondary battery having high energy density and excellent lifetime characteristics includes: (1) a positive electrode containing a positive electrode active material in a single particle form having a D50 of 5.5 μm to 8 μm; (2) a negative electrode containing a first negative electrode active material having a Si—C composite; and (3) an electrolyte. The irreversible capacity per unit area of the negative electrode is smaller than an irreversible capacity per unit area of the positive electrode.
Full Text
What is claimed is:
A lithium secondary battery having high energy density and excellent lifetime characteristics includes: (1) a positive electrode containing a positive electrode active material in a single particle form having a D50 of 5.5 μm to 8 μm; (2) a negative electrode containing a first negative electrode active material having a Si—C composite; and (3) an electrolyte. The irreversible capacity per unit area of the negative electrode is smaller than an irreversible capacity per unit area of the positive electrode.
Timeline
Filed
04/15/2026Published
08/20/2026Granted
Not AvailableIPC Codes(7)
H01M 10/42:Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells (takes precedence H01M 10/60)
H01M 4/02:Electrodes composed of, or comprising, active material
H01M 4/36:Selection of substances as active materials, active masses, active liquids