LITHIUM-ION SECONDARY BATTERY

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)...

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Main Authors Cao, Frank, Dong, Jian, Chen, Xilin, Greszler, Thomas, Havranek, John, TOKUOKA, Saori
Format Patent
LanguageEnglish
Published 12.10.2023
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary: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 C2 to C8 saturated acid; and a total weight of the additive compounds (d3) being about 0.20 to about 6.0 wt %.
Bibliography:Application Number: US202217714264